abidance vs residency

abidance and residency both are nouns.

Word	Noun	Adjective	Verb	Adverb
abidance	Yes	No	No	No
residency	Yes	No	No	No

As nouns, abidance and residency are synonyms defined as:

Other synonyms of abidance include residence.

abidance (noun)	residency (noun)
the act of abiding (enduring without yielding)	the act of dwelling in a place
the act of dwelling in a place	the position of physician who is receiving special training in a hospital (usually after completing an internship)
acting according to certain accepted standards