| Flap 1 | Flap 2 |
| Language | Our spoken, written or gestured words and the ways we combine them as we think and communicate |
| Phoneme | In spoken language, the smallest destinctive sound unit |
| Morpheme | In language, the smallest unit that carries meaning;may be a word or part of a word (such as a prefix) |
| Grammar | A system of rules in a language that enables us to communicate with and understand others |
| Semantics | Is the set of rules we use to derive meaning from morphemes, words, and even sentences |
| Syntax | Refers to the rules we use to order words into sentences |
| Babbling Stage | Begginning at age 3 to 4 months, the stage of speech development in which the infant spontaneously utters various sounds at first unrelated to household language |
| One-Word Stage | The stage in speech development, from about age 1 to 2 during which a child speaks mostly in single words |
| Two-Word Stage | Beginning about age 2, the stage in speech development during which a child speaks mostly in two-word statements |
| Telegraphic Speech | Early speech stage in which the child speaks like a telegram- "go car" -using mostly nouns and verbs and omitting "auxiliary" words |
| Linguistic Relativity | Whorf's hypothesis that language determines the way we think |
