come around vs occur

come around and occur both are verbs.

Word	Noun	Adjective	Verb	Adverb
come around	No	No	Yes	No
occur	No	No	Yes	No

As verbs, occur is a hypernym of come around; that is, occur is a word with a broader meaning than come around:

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

come around (verb)	occur (verb)
happen regularly	come to pass
change one's position or opinion	come to one's mind; suggest itself
	to be found to exist