awkwardness vs unskillfulness

awkwardness and unskillfulness both are nouns.

Word	Noun	Adjective	Verb	Adverb
awkwardness	Yes	No	No	No
unskillfulness	Yes	No	No	No

As nouns, unskillfulness is a hypernym of awkwardness; that is, unskillfulness is a word with a broader meaning than awkwardness:

awkwardness (noun)	unskillfulness (noun)
the carriage of someone whose movements and posture are ungainly or inelegant	a lack of cognitive skill
the quality of an embarrassing situation
trouble in carrying or managing caused by bulk or shape
the inelegance of someone stiff and unrelaxed (as by embarrassment)
unskillfulness resulting from a lack of training