flushless toilet vs potty

flushless toilet and potty both are nouns.

Word	Noun	Adjective	Verb	Adverb
flushless toilet	Yes	No	No	No
potty	Yes	Yes	No	No

As nouns, potty is a hypernym of flushless toilet; that is, potty is a word with a broader meaning than flushless toilet:

flushless toilet: a toilet that relies on bacteria to break down waste matter (instead of using water)
potty: a plumbing fixture for defecation and urination

Other hypernyms of flushless toilet include can, commode, crapper, pot, stool, throne, toilet.

flushless toilet (noun)	potty (noun)
a toilet that relies on bacteria to break down waste matter (instead of using water)	a receptacle for urination or defecation in the bedroom
	a plumbing fixture for defecation and urination

flushless toilet (adjective)	potty (adjective)
	slightly intoxicated
	marked by foolish or unreasoning fondness
	(British informal) trivial