synchronise vs fall out

synchronise and fall out both are verbs.

Word	Noun	Adjective	Verb	Adverb
synchronise	No	No	Yes	No
fall out	No	No	Yes	No

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

Other hypernyms of synchronise include come about, go on, hap, happen, occur, pass, pass off, take place.

synchronise (verb)	fall out (verb)
make synchronous and adjust in time or manner	come to pass
operate simultaneously	have a breach in relations
cause to indicate the same time or rate	drop out
arrange or represent events so that they co-occur	leave (a barracks) in order to take a place in a military formation, or leave a military formation
make (motion picture sound) exactly simultaneous with the action	come as a logical consequence; follow logically
happen at the same time