anestrus vs physical condition

anestrus and physical condition both are nouns.

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

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

anestrus: applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus
physical condition: the condition or state of the body or bodily functions

Other hypernyms of anestrus include physiological condition, physiological state.

anestrus (noun)	physical condition (noun)
applies to nonhuman mammals: a state or interval of sexual inactivity between two periods of estrus	the condition or state of the body or bodily functions