recoil vs bound off

recoil is a noun but bound off is not a noun.

Word	Noun	Adjective	Verb	Adverb
recoil	Yes	No	Yes	No
bound off	No	No	Yes	No

As verbs, bound off is a hyponym of recoil; that is, bound off is a word with a more specific, narrower meaning than recoil:

Other hyponyms of recoil include kick, kick back, recoil, skip, carom.

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

recoil (verb)	bound off (verb)
spring back, as from a forceful thrust	bound off one point after another
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