recoil vs come about

recoil is a noun but come about is not a noun.

Word	Noun	Adjective	Verb	Adverb
recoil	Yes	No	Yes	No
come about	No	No	Yes	No

As verbs, come about is a hypernym of recoil; that is, come about is a word with a broader meaning than recoil:

Other hypernyms of recoil include fall out, go on, hap, happen, occur, pass, pass off, take place.

recoil (noun)	come about (noun)
a movement back from an impact
the backward jerk of a gun when it is fired

recoil (verb)	come about (verb)
spring back, as from a forceful thrust	come to pass
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