sunbeam vs sunray

sunbeam and sunray both are nouns.

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

As nouns, sunbeam and sunray are synonyms defined as:

sunbeam (noun)	sunray (noun)
a ray of sunlight	a ray of sunlight
	a ray of artificial ultraviolet light from a sunray lamp
	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