stop vs stay

stop and stay both are nouns.

Word	Noun	Adjective	Verb	Adverb
stop	Yes	No	Yes	No
stay	Yes	No	Yes	No

As nouns, stay is a hypernym of stop; that is, stay is a word with a broader meaning than stop:

As nouns, stop and stay are synonyms defined as:

Other synonyms of stop include arrest, check, halt, hitch, stoppage.

As verbs, stay is a hyponym of stop; that is, stay is a word with a more specific, narrower meaning than stop:

Other hyponyms of stop include embargo.

stop (noun)	stay (noun)
the act of stopping something	continuing or remaining in a place or state
a brief stay in the course of a journey	(nautical) brace consisting of a heavy rope or wire cable used as a support for a mast or spar
a restraint that checks the motion of something	a thin strip of metal or bone that is used to stiffen a garment (e.g. a corset)
an obstruction in a pipe or tube	a judicial order forbidding some action until an event occurs or the order is lifted
a mechanical device in a camera that controls size of aperture of the lens	the state of inactivity following an interruption
(music) a knob on an organ that is pulled to change the sound quality from the organ pipes
a consonant produced by stopping the flow of air at some point and suddenly releasing it
a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations
the event of something ending
a spot where something halts or pauses
the state of inactivity following an interruption

stop (verb)	stay (verb)
prevent completion	stay the same; remain in a certain state
stop and wait, as if awaiting further instructions or developments	stop or halt
hold back, as of a danger or an enemy; check the expansion or influence of	overcome or allay
seize on its way	fasten with stays
render unsuitable for passage	be in a certain place and not leave
come to a halt, stop moving	stop a judicial process
cause to end	dwell
interrupt a trip	continue in a place, position, or situation
stop from happening or developing	hang on during a trial of endurance
put an end to a state or an activity
have an end, in a temporal, spatial, or quantitative sense; either spatial or metaphorical