the richer our collections become, the more numerous are the proofs that all is more or less shaded (nuance), that the remarkable differences become obliterated.
a subtle difference in meaning or opinion or attitude; "without understanding the finer nuances you can't enjoy the humor"; "don't argue about shades of meaning"
A nuance is a small difference in sound, feeling, appearance, or meaning. We can use our eyes and facial expressions to communicate virtually every subtle nuance of emotion there is. a very slight, hardly noticeable difference in manner, colour, meaning etc subtlety (nuer , from nue )