Example image of eyePlorer eyePlorer map for 'Open class (linguistics)': Adjective Compound (linguistics) Derivation (linguistics) Lexical category Linguistics Noun Verb Closed class Auxiliary verb Comic book English language Subtitle (captioning) Slang Constructed language Grammatical conjunction Preposition and postposition Volapük Lexical verb Function word Distributed morphology Grammatical particle Index of linguistics articles Open class East Asian languages Interlingua grammar French articles and determiners Ubykh language English grammar