English grammars traditionally divide words into the following classes or parts of speech: Noun Pronoun Adjective Verb Adverb Preposition Conjunction Interjection Arabic grammars use a different system which has three basic categories: ismun اِسْمٌ “name” (noun) Filuṋ فِعْلٌ “action” (verb) harfun حَرْفٌ “word” (particle)