refer vs pertain

refer and pertain both are verbs.

Word	Noun	Adjective	Verb	Adverb
refer	No	No	Yes	No
pertain	No	No	Yes	No

As verbs, refer and pertain are synonyms defined as:

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

refer (verb)	pertain (verb)
think of, regard, or classify under a subsuming principle or with a general group or in relation to another	be a part or attribute of
have as a meaning	be relevant to
make reference to
use a name to designate
seek information from
send or direct for treatment, information, or a decision
be relevant to