doc vs physician

doc and physician both are nouns.

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

As nouns, doc and physician are synonyms defined as:

Other synonyms of doc include doctor, Dr., MD, medico.

doc (noun)	physician (noun)
a licensed medical practitioner	a licensed medical practitioner