tyrannic vs autocratic

tyrannic and autocratic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tyrannic	No	Yes	No	No
autocratic	No	Yes	No	No

As adjectives, tyrannic and autocratic are synonyms defined as:

tyrannic and autocratic: characteristic of an absolute ruler or absolute rule; having absolute sovereignty

Other synonyms of tyrannic include authoritarian, despotic, dictatorial, tyrannical.

tyrannic (adjective)	autocratic (adjective)
characteristic of an absolute ruler or absolute rule; having absolute sovereignty	offensively self-assured or given to exercising usually unwarranted power
	characteristic of an absolute ruler or absolute rule; having absolute sovereignty