malevolency vs meanness

malevolency and meanness both are nouns.

Word	Noun	Adjective	Verb	Adverb
malevolency	Yes	No	No	No
meanness	Yes	No	No	No

As nouns, meanness is a hyponym of malevolency; that is, meanness is a word with a more specific, narrower meaning than malevolency:

Other hyponyms of malevolency include bitchiness, cattiness, nastiness, spite, spitefulness, cruelness, cruelty, harshness, beastliness.

malevolency (noun)	meanness (noun)
the quality of threatening evil	the quality of being deliberately mean
	extreme stinginess