tilter vs rival

tilter and rival both are nouns.

Word	Noun	Adjective	Verb	Adverb
tilter	Yes	No	No	No
rival	Yes	Yes	Yes	No

As nouns, rival is a hypernym of tilter; that is, rival is a word with a broader meaning than tilter:

Other hypernyms of tilter include challenger, competition, competitor, contender.

tilter (noun)	rival (noun)
a device for emptying a cask by tilting it without disturbing the dregs	the contestant you hope to defeat
someone who engages in a tilt or joust

tilter (adjective)	rival (adjective)
	as a rival in a competition

tilter (verb)	rival (verb)
	be the rival of, be in competition with
	be equal to in quality or ability