Plush
2 of the 7 encyclopedias on this shelf carry an entry for Plush. Both are reproduced below, so you can see where they agree and where they differ.
Aiton's Encyclopedia (1910)
a general name given to fabrics of silk, flax, cotton, mohair, or wool woven with a pile deeper and less dense than that of velvet. Plush is used for upholstery purposes, for women's and children's coats, for men's silk hats, for draperies, curtains, and a variety of fancy articles. Plush is woven by means of wires in the same manner as velvet. A specially constructed loom, however, is now in use for weaving mohair plush. This loom produces two webs simultaneously. The two webs are of cotton warps and wefts, while a system of mohair warps is arranged between the two webs and woven into both. As the weaving advances a sharp knife runs between the two webs exactly in the center, separating the two pieces of cloth and leaving the standing pile on each. Plush undergoes careful finishing processes to render the pile lustrous. Mohair plush is one of the most, if not the most, durable fabric woven. See Velvet
Collier's New Encyclopedia (1921)
a shaggy pile cloth of various materials. An unshorn velvet of cotton, silk, or mixed fiber, sometimes of a silk nap and cotton back. It has two warps, one of which is brought to the surface to make the nap. The warp is gathered in loops by wire, and cut in the manner of velvet. It is composed regularly of a woof of a single woolen thread and a double warp; the one wool of two threads twisted, the other goat's or camel's hair. Some imitation plushes are made of other materials. SIR HORACE C. PLUNKETT