sunray vs sun

sunray and sun both are nouns.

Word	Noun	Adjective	Verb	Adverb
sunray	Yes	No	No	No
sun	Yes	No	Yes	No

sunray (noun)	sun (noun)
a ray of sunlight	any star around which a planetary system revolves
a ray of artificial ultraviolet light from a sunray lamp	the star that is the source of light and heat for the planets in the solar system
herb having a basal cluster of grey-green leaves and leafless stalks each with a solitary broad yellow flower head; desert areas Idaho to Arizona	a person considered as a source of warmth or energy or glory etc
	the rays of the sun

sunray (verb)	sun (verb)
	expose one's body to the sun
	expose to the rays of the sun or affect by exposure to the sun