bonanza vs godsend

bonanza and godsend both are nouns.

Word	Noun	Adjective	Verb	Adverb
bonanza	Yes	No	No	No
godsend	Yes	No	No	No

As nouns, bonanza and godsend are synonyms defined as:

bonanza and godsend: a sudden happening that brings good fortune (as a sudden opportunity to make money)

Other synonyms of bonanza include boom, bunce, gold rush, gravy, manna from heaven, windfall.

bonanza (noun)	godsend (noun)
a sudden happening that brings good fortune (as a sudden opportunity to make money)	a sudden happening that brings good fortune (as a sudden opportunity to make money)
an especially rich vein of precious ore