think of vs refer

think of and refer both are verbs.

Word	Noun	Adjective	Verb	Adverb
think of	No	No	Yes	No
refer	No	No	Yes	No

As verbs, refer is a hyponym of think of; that is, refer is a word with a more specific, narrower meaning than think of:

Other hyponyms of think of include advert, bring up, cite, mention, name.

think of (verb)	refer (verb)
keep in mind for attention or consideration	think of, regard, or classify under a subsuming principle or with a general group or in relation to another
look on as or consider	have as a meaning
intend to refer to	make reference to
take into consideration, have in view	use a name to designate
choose in one's mind	seek information from
devise or invent	send or direct for treatment, information, or a decision
	be relevant to