constriction vs coarctation

constriction and coarctation both are nouns.

Word	Noun	Adjective	Verb	Adverb
constriction	Yes	No	No	No
coarctation	Yes	No	No	No

As nouns, constriction and coarctation are synonyms defined as:

constriction (noun)	coarctation (noun)
the action or process of compressing	(biology) a narrowing or constriction of a vessel or canal; especially a congenital narrowing of the aorta
a tight feeling in some part of the body	tight or narrow compression
tight or narrow compression
a narrowing that reduces the flow through a channel