dismissal vs dismiss

dismissal is a noun but dismiss is not a noun.

Word	Noun	Adjective	Verb	Adverb
dismissal	Yes	No	No	No
dismiss	No	No	Yes	No

dismissal (noun)	dismiss (noun)
the termination of someone's employment (leaving them free to depart)
a judgment disposing of the matter without a trial
official notice that you have been fired from your job
permission to go; the sending away of someone

dismissal (verb)	dismiss (verb)
	declare void
	bar from attention or consideration
	end one's encounter with somebody by causing or permitting the person to leave
	cease to consider; put out of judicial consideration
	terminate the employment of; discharge from an office or position
	stop associating with