flick knife vs switchblade

flick knife and switchblade both are nouns.

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

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

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

Other synonyms of flick knife include flick-knife, switchblade knife.

flick knife (noun)	switchblade (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