Answer:
A phrase is a group of words containing either a subject or a predicate, but not both.
Step-by-step explanation:
A phrase is a group of words that contains either a subject or a predicate but not both.
Gerund is a verb form but functions as a noun in a sentence.
Clauses can contain both subject or predicate, depending on what type of clause it is. Independent clauses can contain both while subordinate clauses may contain either of the two.
Participles are those words that are formed from a verb and used accordingly.