theater prompter vs helper

theater prompter and helper both are nouns.

Word	Noun	Adjective	Verb	Adverb
theater prompter	Yes	No	No	No
helper	Yes	No	No	No

As nouns, helper is a hypernym of theater prompter; that is, helper is a word with a broader meaning than theater prompter:

theater prompter: someone who assists a performer by providing the next words of a forgotten speech
helper: a person who contributes to the fulfillment of a need or furtherance of an effort or purpose

Other hypernyms of theater prompter include assistant, help, supporter.

theater prompter (noun)	helper (noun)
someone who assists a performer by providing the next words of a forgotten speech	a person who helps people or institutions (especially with financial help)
	a person who contributes to the fulfillment of a need or furtherance of an effort or purpose