revolve about vs pertain

revolve about and pertain both are verbs.

Word	Noun	Adjective	Verb	Adverb
revolve about	No	No	Yes	No
pertain	No	No	Yes	No

As verbs, pertain is a hypernym of revolve about; that is, pertain is a word with a broader meaning than revolve about:

Other hypernyms of revolve about include bear on, come to, concern, have to do with, refer, relate, touch, touch on.

revolve about (verb)	pertain (verb)
center upon	be a part or attribute of
	be relevant to