As nouns the difference between thickness and fearnaught

is that thickness is (uncountable) the property of being thick (in dimension) while fearnaught is a fearless person.

As nouns the difference between dreadnaught and fearnaught

is that dreadnaught is while fearnaught is a fearless person.

Pseudocolor is an alternative form of pseudocolour.

As nouns the difference between pseudocolor and pseudocolour

is that pseudocolor is while pseudocolour is an arbitrary colour assigned to each gray level of a monochrome image; used especially in thermography.

As nouns the difference between arbitrary and pseudocolour

is that arbitrary is anything arbitrary, such as an arithmetical value or a fee while pseudocolour is an arbitrary colour assigned to each gray level of a monochrome image; used especially in thermography.

As an adjective arbitrary

is (usually|of a decision) based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random.

As nouns the difference between colour and pseudocolour

is that colour is (lb) the spectral composition of visible light while pseudocolour is an arbitrary colour assigned to each gray level of a monochrome image; used especially in thermography.

As an adjective colour

is conveying colour, as opposed to shades of grey.

As a verb colour

is to give something colour.

As a proper noun gray

is ; originally a nickname for someone with a gray beard or hair.

As a noun pseudocolour is

an arbitrary colour assigned to each gray level of a monochrome image; used especially in thermography.

As nouns the difference between monochrome and pseudocolour

is that monochrome is a black and white image, especially such a photograph while pseudocolour is an arbitrary colour assigned to each gray level of a monochrome image; used especially in thermography.

As an adjective monochrome

is having only one colour.

As a verb image

is .

As an adjective image

is figurative (of sense of term or discourse).

As a noun pseudocolour is

an arbitrary colour assigned to each gray level of a monochrome image; used especially in thermography.

As nouns the difference between thermography and pseudocolour

is that thermography is (physics) any of several techniques for the remote measurement of the temperature variations of a body, especially by creating images produced by infrared radiation while pseudocolour is an arbitrary colour assigned to each gray level of a monochrome image; used especially in thermography.

Marky is a alternative form of markie.

As proper nouns the difference between markie and marky

is that markie is a diminutive of the male given name Mark while Marky is a diminutive=Mark given name.