Sentence is the level of language above phrase. Above sentence are pragmatic-level structures that interconnect sentences into paragraphs, etc., using concepts such as cohesion. Sentences are sometimes classified into simple, compound, complex, and compound-complex, according to the absence or presence of conjunctions, relative clauses (phrases with verb groups that are introduced by "which", "that", etc.) or both. They may also be analysed into subject and predicate.
A sentence is a set of words that is complete in itself, typically containing a subject and predicate, conveying a statement, question, exclamation, or command, and consisting of a main clause and sometimes one or more subordinate clauses. Simply put, a sentence is a group of words that expresses a complete thought.
SUBJECT AND PREDICATE
The primary building blocks of a sentence are the subject and the predicate.