oppressive vs tyrannical

oppressive and tyrannical both are adjectives.

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

As adjectives, oppressive and tyrannical are synonyms defined as:

oppressive and tyrannical: marked by unjust severity or arbitrary behavior

Other synonyms of oppressive include tyrannous.

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