Pochoir is the French word for stenciling,
a form of hand coloring pictures that dates to a
thousand years ago in China.
This form of illustration was introduced
to commercial publishing in France
in the late 1800s. The pochoir process would use
from 20 to 250 different
stencils applied to a black-and-white
print from a photograph.
The prints are affixed to
stencil sheets of metal or board,
and the patches to be colored are cut out.
Each color to be applied uses a
separate pompon, or brush of coarse,
shortly-cropped animal hair,
to sponge or dab on the paint.
Each stencil is done in turn until
the image is finished.
Pochoir had its heyday in the 1920s,
with Paris as its center of
greatest artistic production.
In the United States,
this form of stenciling gave way
quite early to methods like serigraphy and silk-screening.

Frieze- pronounced just like it looks- Freez.
Today it's called a "border" but we COULD call "A decorative horizontal band usually placed along the upper end of a wall" a frieze!  Also, any sculptured or ornamental band in a building, or on furniture, pottery, etc.?
Jar with a frieze of bulls
Part of a processional frieze that once decorated the Parthenon.

Grisaille...greez-eye', or griz-eye'
A style of monochromatic painting usually in shades of gray, used especially for the representation of relief sculpture, or to simulate one.  Achromatic painting.  May refer to a gray underpainting, laid in for subsequent color glazing.

The Baptism of Christ, one of Andrea del Sarto's gray monochrome frescoes in the Chiostro dello Scalzo, Florence (1511-26).

Fauxcabulary part 1

Fauxcabulary part 2

Fauxcabulary part 3