physiology vs irradiation

physiology and irradiation both are nouns.

Word	Noun	Adjective	Verb	Adverb
physiology	Yes	No	No	No
irradiation	Yes	No	No	No

physiology (noun)	irradiation (noun)
processes and functions of an organism	(medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
the branch of the biological sciences dealing with the functioning of organisms	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