A sentence is a group of words containing a subject and predicate.

Part of Speech:  Noun

Definition

1. Grammar . a grammatical unit of one or more words that expresses an independent statement, question, request, command, exclamation, etc., and that typically has a subject as well as apredicate, as in John is here, or Is john here?  In print or writing, a sentence typically begins with a capital letter and ends with appropriate punctuation; in speech it displays recognizable, communicative intonation patters and is often marked by preceding and following pauses.