think of vs entertain

think of and entertain both are verbs.

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

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

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

think of (verb)	entertain (verb)
keep in mind for attention or consideration	take into consideration, have in view
look on as or consider	maintain (a theory, thoughts, or feelings)
intend to refer to	provide entertainment for
take into consideration, have in view
choose in one's mind
devise or invent