come away vs fall off

come away and fall off both are verbs.

Word	Noun	Adjective	Verb	Adverb
come away	No	No	Yes	No
fall off	No	No	Yes	No

As verbs, fall off is a hyponym of come away; that is, fall off is a word with a more specific, narrower meaning than come away:

Other hyponyms of come away include blow off, chop off, cut off, lop off, unsolder.

come away (verb)	fall off (verb)
come to be detached	fall heavily or suddenly; decline markedly
leave in a certain condition	diminish in size or intensity
	come off