Synonyms for Pertain:

n.

belong to, refer to. relevant, have to do with, apply, have a bearing on. pertain (noun)
bear on, relate, refer, concern, touch, appertain, come to, touch on.

v.

be relevant to (verb)
associate, concern, touch, refer, bear on, connect, appertain, apply, relate.
relate (verb)
associate, couple, correlate, consolidate, marry, affiliate, connect, relate.

Other synonyms:

apply. appertain
have to do with.
Other relevant words:
bear on, refer, appertain, belong to, come to, touch, apply, concern, touch on, have to do with, have a bearing on, refer to.