depression

As a verb fatigue

is .

As an adjective fatigue

is tired.

As a noun depression is

depression (area that is lower than its surroundings).

As nouns the difference between melancholia and depression

is that melancholia is deep sadness or gloom; melancholy while depression is depression (area that is lower than its surroundings).

As nouns the difference between decay and depression

is that decay is the process or result of being gradually decomposed while depression is depression (area that is lower than its surroundings).

As a verb decay

is to deteriorate, to get worse, to lose strength or health, to decline in quality.

As nouns the difference between anguish and depression

is that anguish is extreme pain, either of body or mind; excruciating distress while depression is an area that is lower in topography than its surroundings.

As a verb anguish

is to suffer pain.

As an adjective morose

is sullen]], gloomy; showing a [[brood|brooding ill humour.

As a noun depression is

depression (area that is lower than its surroundings).

As nouns the difference between depression and crisis

is that depression is depression (area that is lower than its surroundings) while crisis is a crucial or decisive point or situation; a turning point.

As nouns the difference between depression and encouragement

is that depression is depression (area that is lower than its surroundings) while encouragement is the act of encouraging; incitement to action or to practice; as, the encouragement of youth in generosity.

As nouns the difference between depression and apprehension

is that depression is an area that is lower in topography than its surroundings while apprehension is the physical act of seizing or taking hold of; seizure.

Obscurity is a related term of depression.

As nouns the difference between obscurity and depression

is that obscurity is (label) darkness; the absence of light while depression is depression (area that is lower than its surroundings).

As nouns the difference between sagging and depression

is that sagging is the act of something that sags while depression is an area that is lower in topography than its surroundings.

As a verb sagging

is present participle of lang=en.