A child reaches for a favourite snack, pushes away a puzzle piece, or looks toward the door. There is already something to say. The goal of AAC is not to make communication look a certain way. It is to give that child a reliable way to share what matters, in the moment. So, what are core words in AAC? They are the small, powerful words that make everyday communication more flexible.
What are core words in AAC?
Core words are common words used again and again across many situations. Think of words such as go, more, stop, want, help, like, not, in, out, you, and that. A child can use these words at breakfast, during play, in class, at therapy, and while telling you that they have had enough.
They are different from words that name a specific person, item, place, or topic. Those specific words are often called fringe words. Dinosaur, Grandma, goldfish crackers, and school bus are all valuable fringe words. But they are not likely to fit as many moments as want, go, or not.
Core words give children building blocks for language. With a small set of high-use words, a child can request, protest, comment, ask for help, share an opinion, direct play, and connect with another person. That is why they are often placed in consistent, easy-to-reach locations on an AAC communication board or device.
Why core vocabulary matters for real communication
It is easy to start AAC by adding favourite foods, toys, characters, and activities. Those words can be highly motivating, and they absolutely belong in a child’s system. A child should be able to say bubbles, train, Bluey, or the name of a beloved sibling.
But language cannot stop at naming or requesting. A child also needs ways to say not that, go away, help me, I like it, do it again, or where did it go? Core words create those possibilities.
For a minimally verbal or non-verbal child, this can reduce frustration in a very practical way. Instead of relying on adults to interpret every gesture, sound, or behaviour, the child has a consistent path to communicate their intent. That does not mean AAC eliminates every difficult moment. Communication takes time, practice, and responsive partners. It does mean the child has more chances to be understood without guessing.
Core vocabulary also supports growth beyond early requests. A child who first learns more for more crackers may later use more in phrases such as more music, more time, or tell me more. The word stays useful as their language becomes more complex.
Core words and fringe words work better together
Core words are not a replacement for the words that make a child’s life personal. The strongest AAC systems include both core and fringe vocabulary.
Core words provide flexibility. Fringe words provide detail, identity, interests, and specificity. Together, they help a child say more than either group could offer alone. For example, a child might select want + go + playground, not + that + song, or more + dinosaur.
The balance will depend on the child. A child who loves animals may need animal words visible and easy to find. A student learning classroom routines may benefit from words related to subjects, peers, and school activities. A child with strong opinions about food deserves words for the foods they actually eat, not only generic categories.
There is no single perfect board for every child. What matters is that the system includes words the child can use often, words that reflect their real life, and enough consistency for adults to model without hesitation.
How to teach core words without turning every moment into a test
The most effective starting point is modelling. This means you use the AAC system while you speak, showing the child how a word can be selected in a real situation. You are not asking them to perform. You are showing them what is possible.
If you are rolling a car back and forth, say “go” while selecting go. When the car stops, model stop. At snack time, select more as you say it. If the child turns away from an activity, model not or all done. Keep your spoken language natural and your AAC model simple.
You do not need to select every word you say. In fact, trying to do so can make interaction feel slow and overwhelming. Aim to model one or two meaningful words that fit the moment. Repetition across ordinary routines is more helpful than a long practice session that feels disconnected from real life.
Give the child time after you model. Looking, reaching, touching a symbol, vocalizing, or using a gesture can all be part of communication. Avoid requiring a child to copy your selection before they can receive something they want. AAC should not become a gate they must pass through to access food, comfort, play, or connection.
Start with words that create immediate opportunities
Many families feel pressure to introduce dozens of words at once. You do not need to. Starting small can make it easier for everyone to be consistent.
Choose a few core words that naturally fit your child’s routines and interests. More, go, stop, help, and want are common starting points because they can be used throughout the day. Yet the best first words are the ones you can genuinely model often. If your child loves action games, go, again, and stop may create quick, meaningful interactions. If transitions are difficult, wait, help, go, and not may be especially useful.
Use the words during routines that already happen: getting dressed, eating, bath time, driving, reading, outdoor play, or winding down for bed. The routine is not the lesson. It is the opportunity for communication.
Keep word locations consistent
When core words stay in the same place on an AAC board, children can begin to build motor patterns. Over time, they may remember where more or help is located before they consciously search for it. Moving high-use words around too often can make access harder.
This is one reason thoughtfully designed AAC systems keep core vocabulary stable while allowing personal fringe words to be added around it. A child’s vocabulary should grow with them, but familiar words should remain easy to find.
Model across home, school, and therapy
A word becomes more meaningful when it works with different people in different places. If a child hears and sees help only during a therapy session, it may not become part of their everyday communication. When parents, educators, and therapists model similar words across settings, the child receives a clearer message: these words are available everywhere.
That shared approach also gives adults better information. Are certain words used most at home? Is the child communicating more during play than during classroom activities? Are they beginning to combine words? Usage patterns can guide the next steps without relying only on memory or isolated observations.
A connected platform such as VoiceBloom can help families and professionals see that progress together, while keeping daily communication support simple enough to begin right away.
What progress with core words can look like
Progress is not always a longer sentence or a perfectly accurate symbol selection. Early signs can be quieter but just as meaningful: a child looking toward their board when something changes, accepting an adult’s AAC modelling, selecting more once during a familiar game, or using stop to express a clear preference.
Over time, you may see the child use a word in a new setting, with a new person, or for a new purpose. They might move from requesting more to protesting not, commenting fun, or combining want + outside. Each of these moments shows that AAC is becoming a tool for genuine participation.
Some children will use core words quickly. Others need more time, more modelling, or adjustments to symbol size, access method, vocabulary, and visual layout. Motor needs, vision, attention, language development, and sensory preferences all matter. If a child is not using a word yet, that is information, not failure.
Give your child words for more than requests
Core words matter because children have more to communicate than what they want. They need to refuse, joke, ask questions, share excitement, set boundaries, and tell the people around them what they think.
Start with a few words you can use today. Model them during moments that are already meaningful. Keep the system available, respond to every attempt, and let communication grow at the child’s pace. Every time a child is given a dependable way to say “go,” “help,” “not,” or “more,” they are being given more room to be heard.