perception vs knowledge

perception and knowledge both are nouns.

Word	Noun	Adjective	Verb	Adverb
perception	Yes	No	No	No
knowledge	Yes	No	No	No

As nouns, knowledge is a hypernym of perception; that is, knowledge is a word with a broader meaning than perception:

perception: knowledge gained by perceiving
knowledge: the psychological result of perception and learning and reasoning

Other hypernyms of perception include cognition, noesis.

perception (noun)	knowledge (noun)
becoming aware of something via the senses	the psychological result of perception and learning and reasoning
the process of perceiving
the representation of what is perceived; basic component in the formation of a concept
a way of conceiving something
knowledge gained by perceiving