authoritarianism vs totalitarianism

authoritarianism and totalitarianism both are nouns.

Word	Noun	Adjective	Verb	Adverb
authoritarianism	Yes	No	No	No
totalitarianism	Yes	No	No	No

As nouns, authoritarianism and totalitarianism are synonyms defined as:

authoritarianism and totalitarianism: a form of government in which the ruler is an absolute dictator (not restricted by a constitution or laws or opposition etc.)

Other synonyms of authoritarianism include absolutism, Caesarism, despotism, dictatorship, monocracy, one-man rule, shogunate, Stalinism, tyranny.

authoritarianism (noun)	totalitarianism (noun)
a form of government in which the ruler is an absolute dictator (not restricted by a constitution or laws or opposition etc.)	an ideological belief in the complete and unrestricted power of government.
	a form of government in which the ruler is an absolute dictator (not restricted by a constitution or laws or opposition etc.)