part of speech

The TRADITIONAL term for a GRAMMATICAL CLASS of WORDS. The main ‘parts of speech’ recognized by most school grammars derive from the work of the ancient Greek and Roman grammarians, primarily the NOUN, PRONOUN, VERB, ADVERB, ADJECTIVE, PREPOSITION, CONJUNCTION and INTERJECTION, with ARTICLE, PARTICIPLE and others often added. Because of the inexplicitness with which these terms were traditionally defined (e.g. the use of unclear NOTIONAL criteria), and the restricted nature of their definitions (reflecting the characteristics of Latin or Greek), LINGUISTS tend to prefer such terms as WORD-class or FORM-class, where the grouping is based on FORMAL criteria of a more UNIVERSALLY applicable kind.