mariner vs tar

mariner and tar both are nouns.

Word	Noun	Adjective	Verb	Adverb
mariner	Yes	No	No	No
tar	Yes	No	Yes	No

As nouns, mariner and tar are synonyms defined as:

Other synonyms of mariner include gob, Jack-tar, Jack, old salt, sea dog, seafarer, seaman.

mariner (noun)	tar (noun)
a man who serves as a sailor	a man who serves as a sailor
	any of various dark heavy viscid substances obtained as a residue

mariner (verb)	tar (verb)
	coat with tar