As an adjective chromatic

is relating to or characterised by hue.

As a noun chromatrope is

an instrument for exhibiting certain chromatic effects of light by means of rapidly rotating disks of various colours.

As a proper noun light

is .

As a noun chromatrope is

an instrument for exhibiting certain chromatic effects of light by means of rapidly rotating disks of various colours.

As nouns the difference between disk and chromatrope

is that disk is a thin, flat, circular plate or similar object while chromatrope is an instrument for exhibiting certain chromatic effects of light by means of rapidly rotating disks of various colours.

As a verb disk

is (agriculture) to harrow.

As nouns the difference between colour and chromatrope

is that colour is the spectral composition of visible light while chromatrope is an instrument for exhibiting certain chromatic effects of light by means of rapidly rotating disks of various colours.

As an adjective colour

is conveying colour, as opposed to shades of grey.

As a verb colour

is to give something colour.

As a noun approval

is an expression granting permission; an indication of agreement with a proposal; an acknowledgement that a person, thing or event meets requirements.

As an adjective postapproval is

after approval, especially of a pharmaceutical drug.

As adjectives the difference between pharmaceutical and postapproval

is that pharmaceutical is (medicine) of, or relating to pharmacy or pharmacists while postapproval is after approval, especially of a pharmaceutical drug.

As a noun pharmaceutical

is (medicine) a pharmaceutical or pharmacological preparation or product; a drug.

As a noun drug

is a substance used to treat an illness, relieve a symptom, or modify a chemical process in the body for a specific purpose.

As a verb drug

is to administer intoxicating drugs to, generally without the recipient's knowledge or consent.

As an adjective postapproval is

after approval, especially of a pharmaceutical drug.

As nouns the difference between book and booklover

is that book is book while booklover is one who loves books.

Bibliophile is a synonym of booklover.

As nouns the difference between bibliophile and booklover

is that bibliophile is one who loves books while booklover is one who loves books.

As verbs the difference between texture and overbeat

is that texture is while overbeat is to beat (eggs, cream, etc) for too long, impairing the texture.

As an adjective texture

is textured.