acapnia vs physical condition

acapnia and physical condition both are nouns.

Word	Noun	Adjective	Verb	Adverb
acapnia	Yes	No	No	No
physical condition	Yes	No	No	No

As nouns, physical condition is a hypernym of acapnia; that is, physical condition is a word with a broader meaning than acapnia:

acapnia: a state in which the level of carbon dioxide in the blood is lower than normal; can result from deep or rapid breathing
physical condition: the condition or state of the body or bodily functions

Other hypernyms of acapnia include physiological condition, physiological state.

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