inflexible vs fossilised

inflexible and fossilised both are adjectives.

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

inflexible (adjective)	fossilised (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