propeller vs screw

propeller and screw both are nouns.

Word	Noun	Adjective	Verb	Adverb
propeller	Yes	No	No	No
screw	Yes	No	Yes	No

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

propeller: a mechanical device that rotates to push against air or water
screw: a propeller with several angled blades that rotates to push against water or air

Other hyponyms of propeller include airplane propeller, airscrew, prop, screw propeller, variable-pitch propeller.

propeller (noun)	screw (noun)
a mechanical device that rotates to push against air or water	slang for sexual intercourse
	a fastener with a tapered threaded shank and a slotted head
	a propeller with several angled blades that rotates to push against water or air
	a simple machine of the inclined-plane type consisting of a spirally threaded cylindrical rod that engages with a similarly threaded hole
	someone who guards prisoners

propeller (verb)	screw (verb)
	defeat someone through trickery or deceit
	tighten or fasten by means of screwing motions
	cause to penetrate, as with a circular motion
	turn like a screw
	have sexual intercourse with