As a verb reverse

is .

As a noun copygraph is

(dated) an early means of producing multiple copies of a document by means of pressing it against a slab of gelatin softened with glycerin and making further copies from the resulting reversed image.

As nouns the difference between nonahydrate and coquimbite

is that nonahydrate is (chemistry) a hydrate whose solid contains nine molecules of water of crystallization per molecule, or per unit cell while coquimbite is (mineral) the nonahydrate of.

Coquimbite is a derived term of paracoquimbite.

As nouns the difference between paracoquimbite and coquimbite

is that paracoquimbite is a trigonal-rhombohedral light violet mineral containing hydrogen, iron, oxygen, and sulfur while coquimbite is the nonahydrate of iron(III) sulfate.

As a noun flatten

is .

As an adjective obcompressed is

compressed or flattened anteroposteriorly, or in a way opposite to the usual one.

As an adverb anteroposteriorly

is (biology) along the anteroposterior axis.

As an adjective obcompressed is

compressed or flattened anteroposteriorly, or in a way opposite to the usual one.

As adjectives the difference between opposite and obcompressed

is that opposite is located directly across from something else, or from each other while obcompressed is compressed or flattened anteroposteriorly, or in a way opposite to the usual one.

As a noun opposite

is something opposite or contrary to another.

As an adverb opposite

is in an opposite position.

As a preposition opposite

is facing, or across from.

As nouns the difference between document and copygraph

is that document is an original or official paper relied upon as the basis, proof, or support of anything else, including any writing, book, or other instrument conveying information pertinent to such proof or support any material substance on which the thoughts of men are represented by any species of conventional mark or symbol while copygraph is (dated) an early means of producing multiple copies of a document by means of pressing it against a slab of gelatin softened with glycerin and making further copies from the resulting reversed image.

As a verb document

is to record in documents.

As nouns the difference between press and copygraph

is that press is (lb) a device used to apply pressure to an item while copygraph is (dated) an early means of producing multiple copies of a document by means of pressing it against a slab of gelatin softened with glycerin and making further copies from the resulting reversed image.

As a verb press

is (ambitransitive) to exert weight or force against, to act upon with with force or weight.

In geometry terms the difference between quadrant and quadrantal

is that quadrant is one fourth of a circle or disc; a sector with an angle of 90° while quadrantal is of or relating to a quadrant, or included in the fourth part of a circle.

As nouns the difference between quadrant and quadrantal

is that quadrant is one of the four sections made by dividing an area with two perpendicular lines while quadrantal is an ancient Roman unit of measure for liquids.

As an adjective quadrantal is

of or relating to a quadrant, or included in the fourth part of a circle.

As nouns the difference between copper and quadrin

is that copper is (lb) a reddish-brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol cu, and atomic number 29 or copper can be (slang|law enforcement) a police officer while quadrin is (archaic) an old copper coin of small value.

As an adjective copper

is made of copper.

As a verb copper

is to sheathe or coat with copper.