weakness vs helplessness

weakness and helplessness both are nouns.

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

As nouns, weakness and helplessness are synonyms defined as:

weakness and helplessness: powerlessness revealed by an inability to act

Other synonyms of weakness include impuissance.

weakness (noun)	helplessness (noun)
the property of lacking physical or mental strength; liability to failure under pressure or stress or strain	powerlessness revealed by an inability to act
powerlessness revealed by an inability to act	a feeling of being unable to manage
a penchant for something even though it might not be good for you	the state of needing help from something
a flaw or weak point
the condition of being financially weak