which term describes a group of words containing a subject and it’s verb
The term is a sentence.
The term that describes a group of words containing a subject and its verb is a "sentence."
The term that describes a group of words containing a subject and its verb is called a "clause." A clause is a grammatical unit that typically consists of a subject (which is the noun or pronoun that performs the action or is being described) and a verb (which is the action or state of being).
To identify a clause, you need to look for a subject (who or what the sentence is about) and a verb (the action or state of being associated with the subject). For example, in the sentence "She eats an apple," the group of words "She eats" is a clause because it contains a subject ("she") and its verb ("eats").