dresser vs highboy

dresser and highboy both are nouns.

Word	Noun	Adjective	Verb	Adverb
dresser	Yes	No	No	No
highboy	Yes	No	No	No

As nouns, highboy is a hyponym of dresser; that is, highboy is a word with a more specific, narrower meaning than dresser:

dresser: furniture with drawers for keeping clothes
highboy: a tall chest of drawers divided into two sections and supported on four legs

Other hyponyms of dresser include chiffonier, commode, tallboy, lowboy.

dresser (noun)	highboy (noun)
furniture with drawers for keeping clothes	a tall chest of drawers divided into two sections and supported on four legs
a cabinet with shelves
low table with mirror or mirrors where one sits while dressing or applying makeup
a wardrobe assistant for an actor
a person who dresses in a particular way