commode vs potty seat

commode and potty seat both are nouns.

Word	Noun	Adjective	Verb	Adverb
commode	Yes	No	No	No
potty seat	Yes	No	No	No

As nouns, potty seat is a hyponym of commode; that is, potty seat is a word with a more specific, narrower meaning than commode:

Other hyponyms of commode include flushless toilet, flush toilet, lavatory, potty chair.

commode (noun)	potty seat (noun)
a plumbing fixture for defecation and urination	toilet consisting of a small seat used by young children
a tall elegant chest of drawers