briny vs main

briny and main both are nouns.

Word	Noun	Adjective	Verb	Adverb
briny	Yes	Yes	No	No
main	Yes	Yes	No	No

As nouns, briny and main are synonyms defined as:

briny (noun)	main (noun)
any very large body of (salt) water	a principal pipe in a system that distributes water or gas or electricity or that collects sewage
	any very large body of (salt) water

briny (adjective)	main (adjective)
slightly salty (especially from containing a mixture of seawater and fresh water)	(of a clause) capable of standing syntactically alone as a complete sentence
	most important element
	of force; of the greatest possible intensity