ineptitude vs clumsiness

ineptitude and clumsiness both are nouns.

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

As nouns, ineptitude and clumsiness are synonyms defined as:

ineptitude and clumsiness: unskillfulness resulting from a lack of training

Other synonyms of ineptitude include awkwardness, ineptness, maladroitness, slowness.

ineptitude (noun)	clumsiness (noun)
having no qualities that would render it valuable or useful	the carriage of someone whose movements and posture are ungainly or inelegant
unskillfulness resulting from a lack of training	the inelegance of someone stiff and unrelaxed (as by embarrassment)
	unskillfulness resulting from a lack of training