infection vs medical specialty

infection and medical specialty both are nouns.

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

infection (noun)	medical specialty (noun)
moral corruption or contamination	the branches of medical science that deal with nonsurgical techniques
(international law) illegality that taints or contaminates a ship or cargo rendering it liable to seizure
the communication of an attitude or emotional state among a number of people
an incident in which an infectious disease is transmitted
(medicine) the invasion of the body by pathogenic microorganisms and their multiplication which can lead to tissue damage and disease
(phonetics) the alteration of a speech sound under the influence of a neighboring sound
the pathological state resulting from the invasion of the body by pathogenic microorganisms