Refinement
Part of speech: noun
Definition: The act, or the result of refining; the removal of impurities, or a purified material High-class style; cultivation. A fine or subtle distinction.
Example sentence: Modern man is in crisis. He has degenerated from the redoubtable pillar he became through centuries of refinement and slipped resignedly into the popular depiction of himself as a witless under-achiever, incapable of looking after himself or those around him.
Nuance
Part of speech: noun
Definition: A minor distinction.Subtlety or fine detail.
Example sentence: The moon puts on an elegant show, different every time in shape, colour and nuance.