indication vs medical specialty

indication and medical specialty both are nouns.

Word	Noun	Adjective	Verb	Adverb
indication	Yes	No	No	No
medical specialty	Yes	No	No	No

indication (noun)	medical specialty (noun)
a datum about some physical state that is presented to a user by a meter or similar instrument	the branches of medical science that deal with nonsurgical techniques
something that serves to indicate or suggest
the act of indicating or pointing out by name
(medicine) a reason to prescribe a drug or perform a procedure
something (as a course of action) that is indicated as expedient or necessary