different between gacking vs backing

English

gacking

back +? -ing

backing (countable and uncountable, plural backings)

Support, especially financial.
It's a volunteer organization that works with backing from the city and a few grants.
A liner or other material added behind or underneath.
The cardboard backing gives the notebook a little extra stiffness.
(television, film) A backdrop.
- 2013, Gerald Millerson, TV Scenic Design (page 134)
  The simplest and cheapest answer is to introduce a scenic backing of some kind, a backdrop, a drape, some flats to restrict the shot and obscure whatever is outside.
(music) Musicians and vocalists who support the main performer.
The mounting of a horse or other animal.
The action of putting something back; a switching into reverse.

backing (not comparable)

backing

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