bowler hat vs lid

bowler hat and lid both are nouns.

Word	Noun	Adjective	Verb	Adverb
bowler hat	Yes	No	No	No
lid	Yes	No	No	No

As nouns, lid is a hypernym of bowler hat; that is, lid is a word with a broader meaning than bowler hat:

bowler hat: a felt hat that is round and hard with a narrow brim
lid: headdress that protects the head from bad weather; has shaped crown and usually a brim

Other hypernyms of bowler hat include chapeau, hat.

bowler hat (noun)	lid (noun)
a felt hat that is round and hard with a narrow brim	a movable top or cover (hinged or separate) for closing the opening at the top of a box, chest, jar, pan, etc.
	headdress that protects the head from bad weather; has shaped crown and usually a brim
	either of two folds of skin that can be moved to cover or open the eye