mar vs maim

mar is a noun but maim is not a noun.

Word	Noun	Adjective	Verb	Adverb
mar	Yes	No	Yes	No
maim	No	No	Yes	No

As verbs, maim is a hypernym of mar; that is, maim is a word with a broader meaning than mar:

mar: destroy or injure severely
maim: injure or wound seriously and leave permanent disfiguration or mutilation

mar (noun)	maim (noun)
a mark or flaw that spoils the appearance of something (especially on a person's body)

mar (verb)	maim (verb)
destroy or injure severely	injure or wound seriously and leave permanent disfiguration or mutilation
make imperfect