medical extern vs physician

medical extern and physician both are nouns.

Word	Noun	Adjective	Verb	Adverb
medical extern	Yes	No	No	No
physician	Yes	No	No	No

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

medical extern: a nonresident doctor or medical student; connected with a hospital but not living there
physician: a licensed medical practitioner

Other hypernyms of medical extern include doc, doctor, Dr., MD, medico.

medical extern (noun)	physician (noun)
a nonresident doctor or medical student; connected with a hospital but not living there	a licensed medical practitioner