stay vs abide

stay is a noun but abide is not a noun.

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

As verbs, stay and abide are synonyms defined as:

Other synonyms of stay include bide.

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

Other hyponyms of stay include bide, stay, hold over.

stay (noun)	abide (noun)
continuing or remaining in a place or state
(nautical) brace consisting of a heavy rope or wire cable used as a support for a mast or spar
a thin strip of metal or bone that is used to stiffen a garment (e.g. a corset)
a judicial order forbidding some action until an event occurs or the order is lifted
the state of inactivity following an interruption

stay (verb)	abide (verb)
stay the same; remain in a certain state	put up with something or somebody unpleasant
stop or halt	dwell
overcome or allay
fasten with stays
be in a certain place and not leave
stop a judicial process
dwell
continue in a place, position, or situation
hang on during a trial of endurance