This document discusses syntax and the structure of words. It explains that words can be classified into open word classes, which have many members and include nouns, verbs, adjectives and adverbs, and closed word classes, which have fewer members and include prepositions, conjunctions and pronouns. It also discusses derived words, which are formed by adding affixes, versus non-derived words. Additionally, it covers the different types of adjectives, including attributive adjectives that modify nouns and predicative adjectives that function as predicates in sentences. Examples are provided to illustrate these syntactic concepts.