ham-handedness vs ineptitude

ham-handedness and ineptitude both are nouns.

Word	Noun	Adjective	Verb	Adverb
ham-handedness	Yes	No	No	No
ineptitude	Yes	No	No	No

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

ham-handedness: The property of being clumsy and awkward, and thus excessive.
ineptitude: unskillfulness resulting from a lack of training

Other hypernyms of ham-handedness include awkwardness, clumsiness, ineptness, maladroitness, slowness.

ham-handedness (noun)	ineptitude (noun)
The property of being clumsy and awkward, and thus excessive.	having no qualities that would render it valuable or useful
	unskillfulness resulting from a lack of training