custom vs consuetude

custom and consuetude both are nouns.

Word	Noun	Adjective	Verb	Adverb
custom	Yes	Yes	No	No
consuetude	Yes	No	No	No

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

Other hyponyms of custom include Americanism, Anglicism, Britishism, couvade, Germanism, habit, use, hijab, rite, ritual.

custom (noun)	consuetude (noun)
accepted or habitual practice	a custom or usage that has acquired the force of law
habitual patronage
a specific practice of long standing
money collected under a tariff

custom (adjective)	consuetude (adjective)
made according to the specifications of an individual