authoritarian state vs authoritarian regime

authoritarian state and authoritarian regime both are nouns.

Word	Noun	Adjective	Verb	Adverb
authoritarian state	Yes	No	No	No
authoritarian regime	Yes	No	No	No

As nouns, authoritarian state and authoritarian regime are synonyms defined as:

authoritarian state and authoritarian regime: a government that concentrates political power in an authority not responsible to the people

authoritarian state (noun)	authoritarian regime (noun)
a government that concentrates political power in an authority not responsible to the people	a government that concentrates political power in an authority not responsible to the people