vapidity vs jejuneness

vapidity and jejuneness both are nouns.

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

As nouns, vapidity and jejuneness are synonyms defined as:

Other synonyms of vapidity include jejunity, tameness, vapidness.

vapidity (noun)	jejuneness (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