shy vs confidence

shy and confidence both are nouns.

Word	Noun	Adjective	Verb	Adverb
shy	Yes	Yes	Yes	No
confidence	Yes	No	No	No

shy (noun)	confidence (noun)
a quick throw	freedom from doubt; belief in yourself and your abilities
	a secret that is confided or entrusted to another
	a feeling of trust (in someone or something)
	a state of confident hopefulness that events will be favorable
	a trustful relationship

shy (adjective)	confidence (adjective)
lacking self-confidence
short
wary and distrustful; disposed to avoid persons or things

shy (verb)	confidence (verb)
throw quickly
start suddenly, as from fright