sell out vs sellout

sell out is not a noun while sellout is a noun.

Word	Noun	Adjective	Verb	Adverb
sell out	No	No	Yes	No
sellout	Yes	No	No	No

sell out (noun)	sellout (noun)
	a betrayal of one's principles principles, country, cause, etc.
	the selling of an entire stock of something
	an event for which all tickets are sold
	someone who has sold out

sell out (verb)	sellout (verb)
abandon one's principles for expedience or financial gain
sell or get rid of all one's merchandise