flinty vs stony

flinty and stony both are adjectives.

Word	Noun	Adjective	Verb	Adverb
flinty	No	Yes	No	No
stony	No	Yes	No	No

As adjectives, flinty and stony are synonyms defined as:

Other synonyms of flinty include flint, granitic, obdurate.

flinty (adjective)	stony (adjective)
containing flint	hard as granite
showing unfeeling resistance to tender feelings	showing unfeeling resistance to tender feelings
	abounding in rocks or stones