jitteriness vs nervousness

jitteriness and nervousness both are nouns.

Word	Noun	Adjective	Verb	Adverb
jitteriness	Yes	No	No	No
nervousness	Yes	No	No	No

As nouns, jitteriness and nervousness are synonyms defined as:

jitteriness and nervousness: the anxious feeling you have when you have the jitters

Other synonyms of jitteriness include jumpiness, restiveness.

jitteriness (noun)	nervousness (noun)
the anxious feeling you have when you have the jitters	a sensitive or highly strung temperament
	the anxious feeling you have when you have the jitters
	an uneasy psychological state