timidity vs faintness

timidity and faintness both are nouns.

Word	Noun	Adjective	Verb	Adverb
timidity	Yes	No	No	No
faintness	Yes	No	No	No

As nouns, faintness is a hyponym of timidity; that is, faintness is a word with a more specific, narrower meaning than timidity:

timidity: fearfulness in venturing into new and unknown places or activities
faintness: the trait of lacking boldness and courage

Other hyponyms of timidity include faintheartedness.

timidity (noun)	faintness (noun)
fearfulness in venturing into new and unknown places or activities	the quality of being dim or lacking contrast
fear of the unknown or unfamiliar or fear of making decisions	barely audible
	the property of being without strength
	the trait of lacking boldness and courage
	a feeling of faintness and of being ready to swoon