Fear vs. Instability — What's the Difference?

Fear is an emotion induced by the perception or recognition of phenomena which can pose a danger or threat. Fear causes physiological changes and therefore may produce behavioral changes, such as mounting an aggressive response or fleeing the threat.

In numerous fields of study, the component of instability within a system is generally characterized by some of the outputs or internal states growing without bounds. Not all systems that are not stable are unstable; systems can also be marginally stable or exhibit limit cycle behavior.

A very unpleasant or disturbing feeling caused by the presence or imminence of danger

The quality or condition of being unstable

A state or condition marked by this feeling

(uncountable) The quality of being unstable.

A feeling of disquiet or apprehension

A state that is not in equilibrium, or in which a small change has a large irreversible effect.

A reason for dread or apprehension

The quality or condition of being unstable; lack of stability, firmness, or steadiness; liability to give way or to fail; insecurity; precariousness; as, the instability of a building.

Extreme reverence or awe, as toward a deity.

Lack of determination of fixedness; inconstancy; fickleness; mutability; changeableness; as, instability of character, temper, custom, etc.

To be afraid or frightened of

An unstable order

To be uneasy or apprehensive about

Unreliability attributable to being unstable

To consider probable; expect

A state of disequilibrium (as may occur in cases of inner ear disease)

To revere or be in awe of (a deity, for example).

The quality or attribute of being unstable and irresolute

To be afraid

To be uneasy or apprehensive

(uncountable) A strong, uncontrollable, unpleasant emotion or feeling caused by actual or perceived danger or threat.

(countable) A phobia, a sense of fear induced by something or someone.

(uncountable) Terrified veneration or reverence, particularly towards God, gods, or sovereigns.

(transitive) To be afraid of (something or someone); to consider or expect (something or someone) with alarm.

(intransitive) To feel fear.

To worry about, to feel concern for, to be afraid for.

(transitive) To venerate; to feel awe towards.

(transitive) To regret.

To cause fear to; to frighten.

To be anxious or solicitous for.

To suspect; to doubt.

(dialectal) Able; capable; stout; strong; sound.

A variant of Fere, a mate, a companion.

A painful emotion or passion excited by the expectation of evil, or the apprehension of impending danger; apprehension; anxiety; solicitude; alarm; dread.

Apprehension of incurring, or solicitude to avoid, God's wrath; the trembling and awful reverence felt toward the Supreme Being.

That which causes, or which is the object of, apprehension or alarm; source or occasion of terror; danger; dreadfulness.

To feel a painful apprehension of; to be afraid of; to consider or expect with emotion of alarm or solicitude.

To have a reverential awe of; to be solicitous to avoid the displeasure of.

To be anxious or solicitous for; now replaced by fear for.

To suspect; to doubt.

To affright; to terrify; to drive away or prevent approach of by fear.

To be in apprehension of evil; to be afraid; to feel anxiety on account of some expected evil.

An emotion experienced in anticipation of some specific pain or danger (usually accompanied by a desire to flee or fight)

An anxious feeling;

A profound emotion inspired by a deity;

Be afraid or feel anxious or apprehensive about a possible or probable situation or event;

Be afraid or scared of; be frightened of;

Be sorry; used to introduce an unpleasant statement;

Be uneasy or apprehensive about;

Regard with feelings of respect and reverence; consider hallowed or exalted or be in awe of;