drawers vs underdrawers

drawers and underdrawers both are nouns.

Word	Noun	Adjective	Verb	Adverb
drawers	Yes	No	No	No
underdrawers	Yes	No	No	No

As nouns, drawers and underdrawers are synonyms defined as:

Other synonyms of drawers include boxers, boxershorts, shorts.

drawers (noun)	underdrawers (noun)
(used in the plural) underpants worn by women	underpants worn by men
underpants worn by men