In this article, the various classifications of "word" in the Arabic syntax have been presented and discussed. They are:I. The classification of word in three classes: noun, verb, "harf' (conjunction, preposition, article,...)
The Arabic grammarians have confirmed this classification both in the past and at present.II. The classification of word in four classes: noun, verb, "harf', The Arabic lexical experts and some of the contemporary grammarians have confirmed this classification.III. The classification of word in seven classes: noun, adjective, verb, pronoun, This sort of classification has been presented by one of the contemporary lexical experts.IV. The classification of word in five classes: noun, verb, "harf" The scholars of "Fiqh and' Usul" have confirmed this classification.Hence, the researcher has surveyed and discussed the principles and elements) strengths, and weaknesses of each classification being mentioned above.