shorts vs trunks

shorts and trunks both are nouns.

Word	Noun	Adjective	Verb	Adverb
shorts	Yes	No	No	No
trunks	Yes	No	No	No

As nouns, shorts and trunks are synonyms defined as:

shorts and trunks: (used in the plural) trousers that end at or above the knee

Other synonyms of shorts include short pants.

shorts (noun)	trunks (noun)
(used in the plural) trousers that end at or above the knee	(used in the plural) trousers that end at or above the knee
underpants worn by men