tyrannical vs oppressive

tyrannical and oppressive both are adjectives.

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

As adjectives, tyrannical and oppressive are synonyms defined as:

tyrannical and oppressive: marked by unjust severity or arbitrary behavior

Other synonyms of tyrannical include tyrannous.

tyrannical (adjective)	oppressive (adjective)
marked by unjust severity or arbitrary behavior	marked by unjust severity or arbitrary behavior
characteristic of an absolute ruler or absolute rule; having absolute sovereignty	weighing heavily on the senses or spirit