dental assistant vs helper

dental assistant and helper both are nouns.

Word	Noun	Adjective	Verb	Adverb
dental assistant	Yes	No	No	No
helper	Yes	No	No	No

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

dental assistant: an assistant to a dentist
helper: a person who contributes to the fulfillment of a need or furtherance of an effort or purpose

Other hypernyms of dental assistant include assistant, help, supporter.

dental assistant (noun)	helper (noun)
an assistant to a dentist	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