Glossary / Lexicon

Open-class word refers to a word, such as a noun, a verb, or an adjective, that plays a primary role in the meaning of a sentence. Open-class words, moreover is a word from the categories of noun, verb, adjective, adverb which is labeled "open class" because new nouns, verbs, adjectives, and adverbs can readily be coined and added to the language. Please see also Closed-class word. Please see also Content word