general medicine vs internal medicine

general medicine and internal medicine both are nouns.

Word	Noun	Adjective	Verb	Adverb
general medicine	Yes	No	No	No
internal medicine	Yes	No	No	No

As nouns, general medicine and internal medicine are synonyms defined as:

general medicine and internal medicine: the branch of medicine that deals with the diagnosis and (nonsurgical) treatment of diseases of the internal organs (especially in adults)

general medicine (noun)	internal medicine (noun)
the branch of medicine that deals with the diagnosis and (nonsurgical) treatment of diseases of the internal organs (especially in adults)	the branch of medicine that deals with the diagnosis and (nonsurgical) treatment of diseases of the internal organs (especially in adults)