skittishness vs restiveness

skittishness and restiveness both are nouns.

Word	Noun	Adjective	Verb	Adverb
skittishness	Yes	No	No	No
restiveness	Yes	No	No	No

As nouns, skittishness and restiveness are synonyms defined as:

skittishness and restiveness: characterized by nervousness and quickness to take fright

skittishness (noun)	restiveness (noun)
characterized by nervousness and quickness to take fright	characterized by nervousness and quickness to take fright
	The characteristic of being resistant of control, stubborn.
	the anxious feeling you have when you have the jitters