stonelike vs petrous

stonelike and petrous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
stonelike	No	Yes	No	No
petrous	No	Yes	No	No

As adjectives, stonelike and petrous are synonyms defined as:

stonelike and petrous: (of bone especially the temporal bone) resembling stone in hardness

stonelike (adjective)	petrous (adjective)
(of bone especially the temporal bone) resembling stone in hardness	(of bone especially the temporal bone) resembling stone in hardness