pants vs bloomers

pants and bloomers both are nouns.

Word	Noun	Adjective	Verb	Adverb
pants	Yes	No	No	No
bloomers	Yes	No	No	No

As nouns, pants and bloomers are synonyms defined as:

Other synonyms of pants include drawers, knickers.

pants (noun)	bloomers (noun)
(used in the plural) underpants worn by women	(used in the plural) underpants worn by women