Art terms

[wisemother]

Can anyone tell me which art terms answer these descriptions.

The blending or boundary of light and shade in a painting etc.

A picture printed in oil colours to resemble a painting.

[wisemother]

Thanks for this In A Pickle.  Googling oliograph also led me to reading more about lithograph and I think this probably fits the bill.  These are from a quiz where you have to find the right art term to fit the definition.  Another one reads "The treatment or effects of ligt and shade in drawing, painting etc" and I have put down Chiaroscuro for that one so I think I need another word!! It's the last one of the thirty so it's driving me mad!!

[jno]

sfumato? Leonardo made much use of it.

[wisemother]

Thanks for this jno, the definition certainly seems to fit.