tyrannical vs despotic

tyrannical and despotic both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tyrannical	No	Yes	No	No
despotic	No	Yes	No	No

As adjectives, tyrannical and despotic are synonyms defined as:

tyrannical and despotic: characteristic of an absolute ruler or absolute rule; having absolute sovereignty

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

tyrannical (adjective)	despotic (adjective)
marked by unjust severity or arbitrary behavior	belonging to or having the characteristics of a despot
characteristic of an absolute ruler or absolute rule; having absolute sovereignty	characteristic of an absolute ruler or absolute rule; having absolute sovereignty
	ruled by or characteristic of a despot