fishing smack vs fishing vessel

fishing smack and fishing vessel both are nouns.

Word	Noun	Adjective	Verb	Adverb
fishing smack	Yes	No	No	No
fishing vessel	Yes	No	No	No

As nouns, fishing smack and fishing vessel are synonyms defined as:

fishing smack and fishing vessel: a vessel for fishing; often has a well to keep the catch alive

Other synonyms of fishing smack include fishing boat.

fishing smack (noun)	fishing vessel (noun)
a vessel for fishing; often has a well to keep the catch alive	a vessel for fishing; often has a well to keep the catch alive