Indian giver vs donor

Indian giver and donor both are nouns.

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

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

Indian giver: an offensive term for someone who asks you to return a present he has given you
donor: person who makes a gift of property

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

Indian giver (noun)	donor (noun)
an offensive term for someone who asks you to return a present he has given you	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)