think about vs think of

think about and think of both are verbs.

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

As verbs, think about and think of are synonyms defined as:

Other synonyms of think about include entertain, flirt with, toy with.

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