ignore vs know

ignore is not a noun while know is a noun.

Word	Noun	Adjective	Verb	Adverb
ignore	No	No	Yes	No
know	Yes	No	Yes	No

ignore (noun)	know (noun)
	the fact of being aware of information that is known to few people

ignore (verb)	know (verb)
be ignorant of or in the dark about	be familiar or acquainted with a person or an object
give little or no attention to	be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about
bar from attention or consideration	know how to do or perform something
refuse to acknowledge	have firsthand knowledge of states, situations, emotions, or sensations
fail to notice	accept (someone) to be what is claimed or accept his power and authority
	know the nature or character of
	be able to distinguish, recognize as being different
	perceive as familiar
	have fixed in the mind
	have sexual intercourse with