inflexible vs fossilized

inflexible and fossilized both are adjectives.

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

inflexible (adjective)	fossilized (adjective)
resistant to being bent	set in a rigidly conventional pattern of behavior, habits, or beliefs
incapable of change
not making concessions
incapable of adapting or changing to meet circumstances