faintheartedness vs timidity

faintheartedness and timidity both are nouns.

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

As nouns, timidity is a hypernym of faintheartedness; that is, timidity is a word with a broader meaning than faintheartedness:

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

Other hypernyms of faintheartedness include timorousness.

faintheartedness (noun)	timidity (noun)
the trait of lacking boldness and courage	fearfulness in venturing into new and unknown places or activities
	fear of the unknown or unfamiliar or fear of making decisions