donor vs helper

donor and helper both are nouns.

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

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

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

Other hypernyms of donor include benefactor.

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

donor: (medicine) someone who gives blood or tissue or an organ to be used in another person (the host)
helper: a person who helps people or institutions (especially with financial help)

Other hypernyms of donor include benefactor.

donor (noun)	helper (noun)
person who makes a gift of property	a person who helps people or institutions (especially with financial help)
(medicine) someone who gives blood or tissue or an organ to be used in another person (the host)	a person who contributes to the fulfillment of a need or furtherance of an effort or purpose