fossilized vs ossified

fossilized and ossified both are adjectives.

Word	Noun	Adjective	Verb	Adverb
fossilized	No	Yes	No	No
ossified	No	Yes	No	No

As adjectives, fossilized and ossified are synonyms defined as:

fossilized and ossified: set in a rigidly conventional pattern of behavior, habits, or beliefs

Other synonyms of fossilized include fossilised.

fossilized (adjective)	ossified (adjective)
set in a rigidly conventional pattern of behavior, habits, or beliefs	set in a rigidly conventional pattern of behavior, habits, or beliefs