intermarriage vs matrimony

intermarriage and matrimony both are nouns.

Word	Noun	Adjective	Verb	Adverb
intermarriage	Yes	No	No	No
matrimony	Yes	No	No	No

As nouns, matrimony is a hypernym of intermarriage; that is, matrimony is a word with a broader meaning than intermarriage:

intermarriage: marriage within one's own tribe or group as required by custom or law
matrimony: the state of being a married couple voluntarily joined for life (or until divorce)

Other hypernyms of intermarriage include marriage, spousal relationship, union, wedlock.

As nouns, matrimony is a hypernym of intermarriage; that is, matrimony is a word with a broader meaning than intermarriage:

intermarriage: marriage to a person belonging to a tribe or group other than your own as required by custom or law
matrimony: the state of being a married couple voluntarily joined for life (or until divorce)

Other hypernyms of intermarriage include marriage, spousal relationship, union, wedlock.

intermarriage (noun)	matrimony (noun)
marriage within one's own tribe or group as required by custom or law	the ceremony or sacrament of marriage
marriage to a person belonging to a tribe or group other than your own as required by custom or law	the state of being a married couple voluntarily joined for life (or until divorce)