mention vs think of

mention is a noun but think of is not a noun.

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

As verbs, think of is a hypernym of mention; that is, think of is a word with a broader meaning than mention:

Other hypernyms of mention include have in mind, mean.

mention (noun)	think of (noun)
an official recognition of merit
a remark that calls attention to something or someone
a short note recognizing a source of information or of a quoted passage

mention (verb)	think of (verb)
make mention of	keep in mind for attention or consideration
commend	look on as or consider
make reference to	intend to refer to
	take into consideration, have in view
	choose in one's mind
	devise or invent