granitic vs obdurate

granitic and obdurate both are adjectives.

Word	Noun	Adjective	Verb	Adverb
granitic	No	Yes	No	No
obdurate	No	Yes	No	No

As adjectives, granitic and obdurate are synonyms defined as:

Other synonyms of granitic include flint, flinty, stony.

granitic (adjective)	obdurate (adjective)
hard as granite	showing unfeeling resistance to tender feelings
showing unfeeling resistance to tender feelings	stubbornly persistent in wrongdoing