helplessness vs helpless

helplessness is a noun but helpless is not a noun.

Word	Noun	Adjective	Verb	Adverb
helplessness	Yes	No	No	No
helpless	No	Yes	No	No

helplessness (noun)	helpless (noun)
powerlessness revealed by an inability to act
a feeling of being unable to manage
the state of needing help from something

helplessness (adjective)	helpless (adjective)
	unable to manage independently
	unable to function; without help
	lacking in or deprived of strength or power