galleon vs carrack

galleon and carrack both are nouns.

Word	Noun	Adjective	Verb	Adverb
galleon	Yes	No	No	No
carrack	Yes	No	No	No

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

galleon: a large square-rigged sailing ship with three or more masts; used by the Spanish for commerce and war from the 15th to 18th centuries
carrack: a large galleon sailed in the Mediterranean as a merchantman

Other hyponyms of galleon include carack.

galleon (noun)	carrack (noun)
a large square-rigged sailing ship with three or more masts; used by the Spanish for commerce and war from the 15th to 18th centuries	a large galleon sailed in the Mediterranean as a merchantman