"What part of speech are the words, ""and"", ""or"", and ""but""?"
Part of speech words. Part of speech In traditional grammar, a part of speech (abbreviated form: PoS or POS) is a category of words (or, more generally, of lexical items) which have similar grammatical properties. Words that are assigned to the same part of speech generally display similar behavior in terms of syntax—they play similar roles within the grammatical structure of sentences—and sometimes in terms of morphology, in that they undergo inflection for similar properties. Commonly listed English parts of speech are "noun", "verb", "adjective", "adverb", "pronoun", "preposition", "conjunction", "interjection", and sometimes "numeral", "article" or "determiner". Essentially all these word classes exist within
Part of speech in addition to these. For discussion see the sections below. The classification below, or slight expansions of it, is still followed in most dictionaries: English words are not generally marked as belonging to one part of speech or another; this contrasts with many other European languages, which use inflection more extensively, meaning that a given word form can often be identified as belonging to a particular part of speech and having certain additional grammatical properties. In English, most words are uninflected, while the inflected endings that exist are mostly ambiguous: "-ed" may mark a verbal past tense, a participle or