authoritarian regime vs authoritarian state

authoritarian regime and authoritarian state both are nouns.

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

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

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

authoritarian regime (noun)	authoritarian state (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