timidity vs timidness

timidity and timidness both are nouns.

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

As nouns, timidity and timidness are synonyms defined as:

timidity and timidness: fear of the unknown or unfamiliar or fear of making decisions

Other synonyms of timidity include timorousness.

timidity (noun)	timidness (noun)
fearfulness in venturing into new and unknown places or activities	fear of the unknown or unfamiliar or fear of making decisions
fear of the unknown or unfamiliar or fear of making decisions