entertainment vs entertain

entertainment is a noun but entertain is not a noun.

Word	Noun	Adjective	Verb	Adverb
entertainment	Yes	No	No	No
entertain	No	No	Yes	No

entertainment (noun)	entertain (noun)
an activity that is diverting and that holds the attention

entertainment (verb)	entertain (verb)
	take into consideration, have in view
	maintain (a theory, thoughts, or feelings)
	provide entertainment for