Refinement

The act of refining, or the state of being refined; as, the refinement or metals; refinement of ideas.

That which is refined, elaborated, or polished to excess; an affected subtilty; as, refinements of logic.

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"

the quality of excellence in thought and manners and taste; "a man of intellectual refinement"; "he is remembered for his generosity and civilization"