bestower vs helper

bestower and helper both are nouns.

Word	Noun	Adjective	Verb	Adverb
bestower	Yes	No	No	No
helper	Yes	No	No	No

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

bestower: person who makes a gift of property
helper: a person who helps people or institutions (especially with financial help)

Other hypernyms of bestower include benefactor.

bestower (noun)	helper (noun)
person who makes a gift of property	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