contemporise vs happen

contemporise and happen both are verbs.

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

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

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

contemporise (verb)	happen (verb)
arrange or represent events so that they co-occur	come to pass
happen at the same time	come into being; become reality
	happen, occur, or be the case in the course of events or by chance
	come upon, as if by accident; meet with
	chance to be or do something, without intention or causation