synchronise vs happen

synchronise and happen both are verbs.

Word	Noun	Adjective	Verb	Adverb
synchronise	No	No	Yes	No
happen	No	No	Yes	No

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

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

synchronise (verb)	happen (verb)
make synchronous and adjust in time or manner	come to pass
operate simultaneously	come into being; become reality
cause to indicate the same time or rate	happen, occur, or be the case in the course of events or by chance
arrange or represent events so that they co-occur	come upon, as if by accident; meet with
make (motion picture sound) exactly simultaneous with the action	chance to be or do something, without intention or causation
happen at the same time