helplessness vs dependance

helplessness and dependance both are nouns.

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

As nouns, dependance is a hypernym of helplessness; that is, dependance is a word with a broader meaning than helplessness:

helplessness: the state of needing help from something
dependance: the state of relying on or being controlled by someone or something else

Other hypernyms of helplessness include dependence, dependency.

helplessness (noun)	dependance (noun)
powerlessness revealed by an inability to act	the state of relying on or being controlled by someone or something else
a feeling of being unable to manage	being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)
the state of needing help from something