male chauvinism vs sexism

male chauvinism and sexism both are nouns.

Word	Noun	Adjective	Verb	Adverb
male chauvinism	Yes	No	No	No
sexism	Yes	No	No	No

As nouns, sexism is a hypernym of male chauvinism; that is, sexism is a word with a broader meaning than male chauvinism:

male chauvinism: activity indicative of belief in the superiority of men over women
sexism: discriminatory or abusive behavior towards members of the opposite sex

male chauvinism (noun)	sexism (noun)
activity indicative of belief in the superiority of men over women	discriminatory or abusive behavior towards members of the opposite sex