jejuneness vs vapidness

jejuneness and vapidness both are nouns.

Word	Noun	Adjective	Verb	Adverb
jejuneness	Yes	No	No	No
vapidness	Yes	No	No	No

As nouns, jejuneness and vapidness are synonyms defined as:

jejuneness and vapidness: the quality of being vapid and unsophisticated

Other synonyms of jejuneness include jejunity, tameness, vapidity.

jejuneness (noun)	vapidness (noun)
the quality of being vapid and unsophisticated	the quality of being vapid and unsophisticated
quality of inadequate nutritive value
lacking and evidencing lack of experience of life