flak vs flack catcher

flak and flack catcher both are nouns.

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

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

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

Other synonyms of flak include flack, flak catcher.

flak (noun)	flack catcher (noun)
artillery designed to shoot upward at airplanes	a slick spokesperson who can turn any criticism to the advantage of their employer
intense adverse criticism
a slick spokesperson who can turn any criticism to the advantage of their employer