giver vs bestower

giver and bestower both are nouns.

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

As nouns, giver and bestower are synonyms defined as:

Other synonyms of giver include conferrer, donor, presenter.

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