crumple vs fall in

crumple and fall in both are verbs.

Word	Noun	Adjective	Verb	Adverb
crumple	No	No	Yes	No
fall in	No	No	Yes	No

As verbs, fall in is a hypernym of crumple; that is, fall in is a word with a broader meaning than crumple:

Other hypernyms of crumple include break, cave in, collapse, founder, give, give way.

crumple (verb)	fall in (verb)
become wrinkled or crumpled or creased	break down, literally or metaphorically
to gather something into small wrinkles or folds	become part of; become a member of a group or organization
fold or collapse	to take one's place in a military formation or line
fall apart