highchair vs rung

highchair and rung both are nouns.

Word	Noun	Adjective	Verb	Adverb
highchair	Yes	No	No	No
rung	Yes	No	No	No

highchair (noun)	rung (noun)
a chair for feeding a very young child; has four long legs and a footrest and a detachable tray	one of the crosspieces that form the steps of a ladder
	a crosspiece between the legs of a chair