posturing vs conceitedness

posturing and conceitedness both are nouns.

Word	Noun	Adjective	Verb	Adverb
posturing	Yes	No	No	No
conceitedness	Yes	No	No	No

As nouns, conceitedness is a hypernym of posturing; that is, conceitedness is a word with a broader meaning than posturing:

Other hypernyms of posturing include conceit, vanity.

posturing (noun)	conceitedness (noun)
adopting a vain conceited posture	the trait of being unduly vain and conceited; false pride