roll around vs occur

roll around and occur both are verbs.

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

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

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

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