hypocapnia vs acapnia

hypocapnia and acapnia both are nouns.

Word	Noun	Adjective	Verb	Adverb
hypocapnia	Yes	No	No	No
acapnia	Yes	No	No	No

As nouns, hypocapnia and acapnia are synonyms defined as:

hypocapnia and acapnia: a state in which the level of carbon dioxide in the blood is lower than normal; can result from deep or rapid breathing

hypocapnia (noun)	acapnia (noun)
a state in which the level of carbon dioxide in the blood is lower than normal; can result from deep or rapid breathing	a state in which the level of carbon dioxide in the blood is lower than normal; can result from deep or rapid breathing