infect vs canker

infect is not a noun while canker is a noun.

Word	Noun	Adjective	Verb	Adverb
infect	No	No	Yes	No
canker	Yes	No	Yes	No

As verbs, canker is a hyponym of infect; that is, canker is a word with a more specific, narrower meaning than infect:

infect (noun)	canker (noun)
	a pernicious and malign influence that is hard to get rid of
	an ulceration (especially of the lips or lining of the mouth)
	a fungal disease of woody plants that causes localized damage to the bark

infect (verb)	canker (verb)
contaminate with a disease or microorganism	infect with a canker
communicate a disease to	become infected with a canker
affect in a contagious way
corrupt with ideas or an ideology