think of vs know as

think of and know as both are verbs.

Word	Noun	Adjective	Verb	Adverb
think of	No	No	Yes	No
know as	No	No	Yes	No

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

Other synonyms of think of include be known as, esteem, look on, look upon, regard as, repute, take to be.

think of (verb)	know as (verb)
keep in mind for attention or consideration	look on as or consider
look on as or consider	assign a specified (usually proper) name to
intend to refer to
take into consideration, have in view
choose in one's mind
devise or invent