dictatorial vs dictator

dictatorial is not a noun while dictator is a noun.

Word	Noun	Adjective	Verb	Adverb
dictatorial	No	Yes	No	No
dictator	Yes	No	No	No

dictatorial (noun)	dictator (noun)
	a ruler who is unconstrained by law
	a person who behaves in a tyrannical manner
	a speaker who dictates to a secretary or a recording machine

dictatorial (adjective)	dictator (adjective)
of or characteristic of a dictator
expecting unquestioning obedience
characteristic of an absolute ruler or absolute rule; having absolute sovereignty