abeyance vs deferral

abeyance and deferral both are nouns.

Word	Noun	Adjective	Verb	Adverb
abeyance	Yes	No	No	No
deferral	Yes	No	No	No

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

Other hyponyms of abeyance include cold storage, recess, moratorium, stand-down, standdown.

abeyance (noun)	deferral (noun)
temporary cessation or suspension	act of putting off to a future time
	a state of abeyance or suspended business