jejuneness vs juvenility

jejuneness and juvenility both are nouns.

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

As nouns, jejuneness and juvenility are synonyms defined as:

jejuneness and juvenility: lacking and evidencing lack of experience of life

Other synonyms of jejuneness include callowness.

jejuneness (noun)	juvenility (noun)
the quality of being vapid and unsophisticated	the freshness and vitality characteristic of a young person
quality of inadequate nutritive value	lacking and evidencing lack of experience of life
lacking and evidencing lack of experience of life