Synonyms for Coating:

n.

membrane, paint, plate, surface. artifact (noun)
coat.
coating (noun)
application, coat, covering, finish, finishing.
covering (noun)
blanket, canopy, casing, cloak, coat, covering, dermis, envelope, film, finish, layer, mask, membrane, overlay, patina, screening, sheath, sheet, shroud, skin, veil, veneer, wrapping.
crust (noun)
film, layer, sheet.
skin (noun)
dermis, skin.

v.

covering (verb)
enveloping, masking, sheathing, veiling, Blanketing, Cloaking, Overlaying, enshrouding, encasing.
layering (verb)
grading, leveling, Laminating, Layering, Stratifying.

Other synonyms:

film. stratum
layer.
Other relevant words:
application, film, finish, finishing, layer, membrane, paint, plate, sheet, surface.

Usage examples for coating

  1. " Oh, yes, of course, uncle," replied Glynne; and they continued along the side path for about a quarter of a mile, before crossing a fir wood, whose trunks rose up like so many ruddy, grey- bronze columns, while the ground was made slippery by the thick coating of pine needles beneath their feet. – The Star-Gazers by George Manville Fenn
  2. She had a new coating of wax on her face and she was as beautiful as ever. – Raggedy Ann Stories by Johnny Gruelle
  3. By the next morning the poster was unrecognizable under a coating of dried reddish spots and was ignominiously removed, to the delight of Stover, whose illusions were thus preserved, as well as his secret. – The Varmint by Owen Johnson F. R. Gruger