conceit vs conceitedness

conceit and conceitedness both are nouns.

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

As nouns, conceit and conceitedness are synonyms defined as:

conceit and conceitedness: the trait of being unduly vain and conceited; false pride

Other synonyms of conceit include vanity.

conceit (noun)	conceitedness (noun)
the trait of being unduly vain and conceited; false pride	the trait of being unduly vain and conceited; false pride
a witty or ingenious turn of phrase
an artistic device or effect
an elaborate poetic image or a far-fetched comparison of very dissimilar things
feelings of excessive pride