sailcloth

As nouns the difference between sailcloth and canvass

is that sailcloth is a strong, durable fabric suitable for making sails for ships or boats while canvass is a solicitation of voters or public opinion.

As a verb canvass is

to solicit voters, opinions, etc from; to go through, with personal solicitation or public addresses.

As nouns the difference between twill and sailcloth

is that twill is a pattern, characterised by diagonal ridges, created by the regular interlacing of threads of the warp and weft during weaving while sailcloth is a strong, durable fabric suitable for making sails for ships or boats.

As a verb twill

is to weave (cloth, etc.) so as to produce the appearance of diagonal lines or ribs on the surface.

As nouns the difference between sailcloth and canvas

is that sailcloth is a strong, durable fabric suitable for making sails for ships or boats while canvas is a type of coarse cloth, woven from hemp, useful for making sails and tents or as a surface for paintings.

As a verb canvas is

to cover an area or object with canvas.

As nouns the difference between sailcloth and tarpaulin

is that sailcloth is a strong, durable fabric suitable for making sails for ships or boats while tarpaulin is (countable) a heavy, waterproof sheet of material, often cloth, used as a cover.