donor vs giver

donor and giver both are nouns.

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

As nouns, donor and giver are synonyms defined as:

Other synonyms of donor include bestower, conferrer, presenter.

donor (noun)	giver (noun)
person who makes a gift of property	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)	someone who devotes himself completely