unprotected vs vulnerable

unprotected and vulnerable both are adjectives.

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

unprotected (adjective)	vulnerable (adjective)
lacking protection or defense	susceptible to attack
	susceptible to criticism or persuasion or temptation
	capable of being wounded or hurt