I think portraits and landscapes.
Relief printing is done by outlining an image on a surface, and then carving along the outline. The artist then applies the raised areas with ink, to be pressed on to a surface. Intaglio is sort of the opposite of relief printing, in that the ink is pushed into the lines and pits and wiped off the surface of the plate. The resulting image comes from the ink in the engraved or etched lines. The resulting image is reversed.
As an adhesive for two materials that aren't too smooth.
The source of the attached painting of Michelangelo
Buonarroti’s, Last Judgement is in the book of revelations in the bible. The painting depicts the Second Coming of
Christ and the final judgement by God for all human souls. The soul of humans
rise and descend to their fates as judged by Christ surrounded by known saints.