gala affair vs blowout

gala affair and blowout both are nouns.

Word	Noun	Adjective	Verb	Adverb
gala affair	Yes	No	No	No
blowout	Yes	No	No	No

As nouns, gala affair and blowout are synonyms defined as:

Other synonyms of gala affair include gala, jamboree.

gala affair (noun)	blowout (noun)
a gay festivity	a gay festivity
	a sudden malfunction of a part or apparatus
	an easy victory