long ton vs gross ton

long ton and gross ton both are nouns.

Word	Noun	Adjective	Verb	Adverb
long ton	Yes	No	No	No
gross ton	Yes	No	No	No

As nouns, long ton and gross ton are synonyms defined as:

long ton and gross ton: a British unit of weight equivalent to 2240 pounds

Other synonyms of long ton include ton.

long ton (noun)	gross ton (noun)
a British unit of weight equivalent to 2240 pounds	a British unit of weight equivalent to 2240 pounds