look on vs know as

look on and know as both are verbs.

Word	Noun	Adjective	Verb	Adverb
look on	No	No	Yes	No
know as	No	No	Yes	No

As verbs, look on and know as are synonyms defined as:

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

look on (verb)	know as (verb)
look on as or consider	look on as or consider
observe without intervening	assign a specified (usually proper) name to