shit vs ineptitude

shit and ineptitude both are nouns.

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

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

Other hypernyms of shit include worthlessness.

shit (noun)	ineptitude (noun)
something of little value	having no qualities that would render it valuable or useful
Obscene word for unacceptable behavior	unskillfulness resulting from a lack of training
insulting terms of address for people who are stupid or irritating or ridiculous
a coarse term for defecation
a small worthless amount
obscene terms for feces

shit (verb)	ineptitude (verb)
have a bowel movement
give away information about somebody