strongman vs dictator

strongman and dictator both are nouns.

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

As nouns, dictator is a hypernym of strongman; that is, dictator is a word with a broader meaning than strongman:

strongman: a powerful political figure who rules by the exercise of force or violence
dictator: a ruler who is unconstrained by law

Other hypernyms of strongman include potentate.

strongman (noun)	dictator (noun)
a powerful political figure who rules by the exercise of force or violence	a ruler who is unconstrained by law
a man who performs feats of strength at a fair or circus	a person who behaves in a tyrannical manner
	a speaker who dictates to a secretary or a recording machine