trews vs trousers

trews and trousers both are nouns.

Word	Noun	Adjective	Verb	Adverb
trews	Yes	No	No	No
trousers	Yes	No	No	No

As nouns, trousers is a hypernym of trews; that is, trousers is a word with a broader meaning than trews:

trews: (used in the plural) tight-fitting trousers; usually of tartan
trousers: (usually in the plural) a garment extending from the waist to the knee or ankle, covering each leg separately

Other hypernyms of trews include pair of trousers, pant.

trews (noun)	trousers (noun)
(used in the plural) tight-fitting trousers; usually of tartan	(usually in the plural) a garment extending from the waist to the knee or ankle, covering each leg separately