insusceptible vs incapable

insusceptible and incapable both are adjectives.

Word	Noun	Adjective	Verb	Adverb
insusceptible	No	Yes	No	No
incapable	No	Yes	No	No

insusceptible (adjective)	incapable (adjective)
not susceptible to	(followed by `of') lacking capacity or ability
	(followed by `of') not having the temperament or inclination for
	not meeting requirements
	not being susceptible to or admitting of something (usually followed by `of')