Passive is a related term of flinty.

As a noun passive

is .

As an adjective flinty is

resembling or containing flint.

Moderate is a related term of calm.

In lang=en terms the difference between moderate and calm

is that moderate is to act as a moderator; to assist in bringing to compromise while calm is to become calm.

As adjectives the difference between moderate and calm

is that moderate is not excessive; acting in moderation while calm is (of a person) peaceful, quiet, especially free from anger and anxiety.

As nouns the difference between moderate and calm

is that moderate is one who holds an intermediate position between extremes, as in politics while calm is (in a person) the state of being calm; peacefulness; absence of worry, anger, fear or other strong negative emotion.

As verbs the difference between moderate and calm

is that moderate is to reduce the excessiveness of (something) while calm is to make calm.

None is a synonym of not_a_soul.

Contest is a related term of feud.

In lang=en terms the difference between contest and feud

is that contest is to strive earnestly to hold or maintain; to struggle to defend while feud is to carry on a feud.

As nouns the difference between contest and feud

is that contest is (uncountable) controversy; debate while feud is a state of long-standing mutual hostility or feud can be an estate granted to a vassal by a feudal lord in exchange for service.

As verbs the difference between contest and feud

is that contest is to contend while feud is to carry on a feud.

Captious is a synonym of troublesome.

As adjectives the difference between captious and troublesome

is that captious is (obsolete) that captures; especially, (of an argument, words etc) designed to capture or entrap in misleading arguments; sophistical while troublesome is giving trouble or anxiety; vexatious; burdensome; wearisome.

Matter is a related term of moment.

As nouns the difference between matter and moment

is that matter is while moment is moment or moment can be momentum.

As nouns the difference between robustness and competence

is that robustness is the quality of being robust while competence is the quality or state of being competent, i.e. able or suitable for a general role.

As nouns the difference between perspicuity and distinctness

is that perspicuity is clarity, lucidity, especially in expression; the state or characteristic of being perspicuous while distinctness is the property or degree of being distinct.

Spacious is a related term of liberal.

As adjectives the difference between spacious and liberal

is that spacious is having much space; roomy while liberal is libertarian, liberal.

As a noun liberal is

libertarian, liberal.

Price is a related term of sign.

As a phrase price

is (label) protect, rest, ice, compression, and elevation a common treatment method for sprained joints.

As a noun sign is

(sometimes|also used uncountably) a visible indication.

As a verb sign is

to make a mark.