vanity vs ineptitude

vanity and ineptitude both are nouns.

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

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

Other hypernyms of vanity include worthlessness.

vanity (noun)	ineptitude (noun)
low table with mirror or mirrors where one sits while dressing or applying makeup	having no qualities that would render it valuable or useful
the trait of being unduly vain and conceited; false pride	unskillfulness resulting from a lack of training
the quality of being valueless or futile
feelings of excessive pride