Core Vocabulary is a term used to describe a relatively small set of words that are used most frequently in oral and written language. 80-85% of the words we say are core vocabulary words.

These words can be used across all contexts and with all communication partners to build sentences and phrases in order to question, comment, request, gather information, and protest. 

Fringe vocabulary refers to a set of thousands of words that are specific to the person, context, and communication partner (i.e. nouns).

In Core Vocabulary Approach the clinician teaches the individual an initial set of core vocabulary that often consists of common words used across contexts. This approach considers vocabulary used by typically communicating peers and any additional words needed by the user based on input from members of the community (e.g., family members, teachers). ASHA.org

Introductory video explaining Aided Language Stimulation

Aided language stimulation is also known as Aided Language Input or Aided Language Modeling. It is a receptive language training approach in which the communication partner provides spoken words along with AAC symbols during communication tasks (e.g., partner points to the AAC symbols while simultaneously talking).