recoil vs backlash

recoil and backlash both are nouns.

Word	Noun	Adjective	Verb	Adverb
recoil	Yes	No	Yes	No
backlash	Yes	No	Yes	No

As nouns, recoil and backlash are synonyms defined as:

Other synonyms of recoil include rebound, repercussion.

As verbs, recoil and backlash are synonyms defined as:

recoil and backlash: come back to the originator of an action with an undesired effect

Other synonyms of recoil include backfire.

recoil (noun)	backlash (noun)
a movement back from an impact	an adverse reaction to some political or social occurrence
the backward jerk of a gun when it is fired	a movement back from an impact

recoil (verb)	backlash (verb)
spring back, as from a forceful thrust	come back to the originator of an action with an undesired effect
draw back, as with fear or pain
spring back; spring away from an impact
come back to the originator of an action with an undesired effect