unprotected vs susceptible

unprotected and susceptible both are adjectives.

Word	Noun	Adjective	Verb	Adverb
unprotected	No	Yes	No	No
susceptible	No	Yes	No	No

unprotected (adjective)	susceptible (adjective)
lacking protection or defense	(often followed by `of' or `to') yielding readily to or capable of
	easily impressed emotionally