fall in vs implode

fall in and implode both are verbs.

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

As verbs, implode is a hyponym of fall in; that is, implode is a word with a more specific, narrower meaning than fall in:

Other hyponyms of fall in include go off, buckle, crumple, flop, break, sink, slide down, slump.

fall in (verb)	implode (verb)
break down, literally or metaphorically	burst inward
become part of; become a member of a group or organization
to take one's place in a military formation or line