inflexible vs hard-line

inflexible and hard-line both are adjectives.

Word	Noun	Adjective	Verb	Adverb
inflexible	No	Yes	No	No
hard-line	No	Yes	No	No

inflexible (adjective)	hard-line (adjective)
resistant to being bent	firm and uncompromising
incapable of change
not making concessions
incapable of adapting or changing to meet circumstances