ham-handedness vs ineptness

ham-handedness and ineptness both are nouns.

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

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

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

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

ham-handedness (noun)	ineptness (noun)
The property of being clumsy and awkward, and thus excessive.	the quality of having the wrong properties for a specific purpose
	unskillfulness resulting from a lack of training