house physician vs physician

house physician and physician both are nouns.

Word	Noun	Adjective	Verb	Adverb
house physician	Yes	No	No	No
physician	Yes	No	No	No

As nouns, physician is a hypernym of house physician; that is, physician is a word with a broader meaning than house physician:

house physician: a physician (especially an intern) who lives in a hospital and cares for hospitalized patients under the supervision of the medical staff of the hospital
physician: a licensed medical practitioner

Other hypernyms of house physician include doc, doctor, Dr., MD, medico.

house physician (noun)	physician (noun)
a physician (especially an intern) who lives in a hospital and cares for hospitalized patients under the supervision of the medical staff of the hospital	a licensed medical practitioner