Phrase, Clause, Sentence
Phrase, clause and sentence are three of the structural units composed of groups of words that create meaning.
Phrases are generally a group of words which may have a noun or verb but no subject doing a verb. It tells you something of what the subject is doing.
A clause is a group of words that has both a subject and a verb. They can stand alone as a sentence because they give a complete meaning.
Clause and phrase are parts of a sentence
A sentence must have a subject, a verb, and a complete thought supplied by a variety of constructions.