valuelessness vs ineptitude

valuelessness and ineptitude both are nouns.

Word	Noun	Adjective	Verb	Adverb
valuelessness	Yes	No	No	No
ineptitude	Yes	No	No	No

As nouns, ineptitude is a hypernym of valuelessness; that is, ineptitude is a word with a broader meaning than valuelessness:

valuelessness: having none of the properties that endow something with value
ineptitude: having no qualities that would render it valuable or useful

Other hypernyms of valuelessness include worthlessness.

valuelessness (noun)	ineptitude (noun)
having none of the properties that endow something with value	having no qualities that would render it valuable or useful
	unskillfulness resulting from a lack of training