switchblade vs flick-knife

switchblade and flick-knife both are nouns.

Word	Noun	Adjective	Verb	Adverb
switchblade	Yes	No	No	No
flick-knife	Yes	No	No	No

As nouns, switchblade and flick-knife are synonyms defined as:

switchblade and flick-knife: a pocketknife with a blade that springs open at the press of a button

Other synonyms of switchblade include flick knife, switchblade knife.

switchblade (noun)	flick-knife (noun)
a pocketknife with a blade that springs open at the press of a button	a pocketknife with a blade that springs open at the press of a button