subsidizer vs donor

subsidizer and donor both are nouns.

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

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

Other hypernyms of subsidizer include bestower, conferrer, giver, presenter.

subsidizer (noun)	donor (noun)
someone who assists or supports by giving a subsidy	person who makes a gift of property
	(medicine) someone who gives blood or tissue or an organ to be used in another person (the host)