As adjectives the difference between melancholy and bereft

is that melancholy is affected with great sadness or depression while bereft is (of a person) pained by the loss of someone.

As a noun melancholy

is black bile, formerly thought to be one of the four "cardinal humours" of animal bodies.

As a verb bereft is

past tense of bereave.

Sire is a related term of forerunner.

As a proper noun sire

is .

As a noun forerunner is

a runner at the front or ahead.

Categorise is a related term of number.

As verbs the difference between categorise and number

is that categorise is while number is to label (items) with numbers; to assign numbers to (items).

As a noun number is

(countable) an abstract entity used to describe quantity.

As an adjective number is

(numb).

Screen is a related term of preserve.

As verbs the difference between screen and preserve

is that screen is to filter by passing through a screen while preserve is .

As a noun screen

is a physical divider intended to block an area from view, or provide shelter from something dangerous.

Method is a related term of manoeuvre.

As nouns the difference between method and manoeuvre

is that method is a process by which a task is completed; a way of doing something (followed by the adposition of, to or for before the purpose of the process): while manoeuvre is .

As a verb manoeuvre is

.

Approbation is a related term of belief.

As nouns the difference between approbation and belief

is that approbation is the act of approving; an assenting to the propriety of a thing with some degree of pleasure or satisfaction; approval, sanction, commendation or official recognition while belief is mental acceptance of a claim as likely true.

As nouns the difference between pigmentation and paint

is that pigmentation is coloration of human, plant or animal tissue, especially by pigment while paint is a substance that is applied as a liquid or paste, and dries into a solid coating that protects or adds color/colour to an object or surface to which it has been applied.

As a verb paint is

to apply paint to.

As adjectives the difference between delicate and tactful

is that delicate is easily damaged or requiring careful handling while tactful is possessing tact; able to deal with people in a sensitive manner.

As a noun delicate

is a delicate item of clothing, especially underwear or lingerie.

Vesture is a related term of robes.

As verbs the difference between vesture and robes

is that vesture is (archaic) to clothe while robes is .

As a noun vesture

is a covering of or like clothing.

Headstrong is a related term of hostile.

As adjectives the difference between headstrong and hostile

is that headstrong is determined to do as one pleases, and not as others want while hostile is belonging or appropriate to an enemy; showing the disposition of an enemy; showing ill will and malevolence, or a desire to thwart and injure; occupied by an enemy or enemies; inimical; unfriendly.

As a noun hostile is

(chiefly|in the plural) an enemy.