medical specialty vs irradiation

medical specialty and irradiation both are nouns.

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

medical specialty (noun)	irradiation (noun)
the branches of medical science that deal with nonsurgical techniques	(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
	the apparent enlargement of a bright object when viewed against a dark background
	(Pavolvian conditioning) the elicitation of a conditioned response by stimulation similar but not identical to the original stimulus
	(physiology) the spread of sensory neural impulses in the cortex
	a column of light (as from a beacon)
	the condition of being exposed to radiation