The page discusses syntactic terminology, highlighting the parallels between syntax and morphology, particularly lexical and functional categories. It emphasizes the unique role of prepositions/adposi...The page discusses syntactic terminology, highlighting the parallels between syntax and morphology, particularly lexical and functional categories. It emphasizes the unique role of prepositions/adpositions as 'tweeners,' which function both lexically and functionally. Lexical categories, including nouns, verbs, adjectives, adverbs, and prepositions, can head their own phrases, while functional categories support lexical items.