flak catcher vs flack catcher

flak catcher and flack catcher both are nouns.

Word	Noun	Adjective	Verb	Adverb
flak catcher	Yes	No	No	No
flack catcher	Yes	No	No	No

As nouns, flak catcher and flack catcher are synonyms defined as:

flak catcher and flack catcher: a slick spokesperson who can turn any criticism to the advantage of their employer

Other synonyms of flak catcher include flack, flak.

flak catcher (noun)	flack catcher (noun)
a slick spokesperson who can turn any criticism to the advantage of their employer	a slick spokesperson who can turn any criticism to the advantage of their employer