- Words can be made up of a single unit of meaning (morpheme) or can have a more complex structure through inflection, derivation, and compounding. Inflection involves adding suffixes to change word class or meaning. Derivation adds affixes to change word identity or class. Compounding combines word stems.
- Phrases group words into higher units and can contain other phrases. The head determines the phrase type as noun, verb, adjective, or adverb. Noun phrases contain a noun head and may take syntactic roles. Verb phrases center around a lexical verb and show tense.