Difference between Dark and Darkening

DARK vs DARKENING: NOUN

The condition of ignorance; gloom; secrecy.
Absence of light; darkness; obscurity; a place where there is little or no light.
An obscured or unenlightened state or condition; obscurity; a state of ignorance: as, I am still in the dark regarding his intentions.
A state of concealment; secrecy: as, things done in the dark.
A dark hue; a dark spot or part.
A dark place.
An unenlightened state
Absence of light or illumination
An unilluminated area
The time after sunset and before sunrise while it is dark outside
Absence of moral or spiritual values
The absence of light; darkness.
An obsolete form of darg.
Pieces of laundry having a dark color.
A deep hue or color.
Night; nightfall.
A place having little or no light.
Absence of light.

Lacking brightness.
Secret
Served without milk or cream.
Being or having a complexion that is not light in color.
Sullen or threatening.
Characterized by gloom or pessimism; dismal or bleak.
Being or characterized by morbid or grimly satiric humor.
Pronounced with the back of the tongue raised toward the velum. Used of the sound (l) in words like full.
Having richness or depth.
Morally corrupt; vicious.
Evil in nature or effect; sinister.
Unknown or concealed; mysterious.
Reflecting only a small fraction of incident light; tending toward black.
Lacking or having very little light.
Having skin rich in melanin pigments
Stemming from evil characteristics or forces; wicked or dishonorable
Lacking enlightenment or knowledge or culture
Causing dejection
Showing a brooding ill humor
Marked by difficulty of style or expression
(used of color) having a dark hue
Devoid or partially devoid of light or brightness; shadowed or black or somber-colored
Brunet (used of hair or skin or eyes)
Not giving performances; closed
Lacking enlightenment, knowledge, or culture.

Morally black; atrocious; wicked; sinister.
Blind; sightless.
To grow or become dark; darken.
Hence Concealed; secret; mysterious; inscrutable as, keep it dark.
Obscure; not easily perceived or understood; difficult to interpret or explain: as, a dark saying; a dark passage in an author.
Threatening; frowning; gloomy; morose: as, a dark scowl.
Characterized by or producing gloom; dreary; cheerless: as, a dark time in the affairs of the country.
Lacking in light or brightness; shaded; obscure: as, a dark day; the dark recesses of a forest.
Not fair: applied to the complexion: as, the dark-skinned races.
Unenlightened, either mentally or spiritually; characterized by backwardness in learning, art, science, or religion; destitute of knowledge or culture; ignorant; uninstructed; rude: uncivilized: as, the dark places of the earth; the dark ages.
Shadowed or black
Wicked or dishonorable
Not giving performances
Closed
Not radiating or reflecting light; wholly or partially black or gray in appearance; having the quality opposite to light or white: as, a dark object; a dark color.
Without light; marked by the absence of light; unilluminated; shadowy: as, a dark night; a dark room.
In the dark; without light.
To make dark; darken; obscure.
To remain in the dark; lurk; lie hidden or concealed.
Devoid of or deficient in light or brightness; shadowed or black
(idiom) (in the dark) In secret.
(idiom) (in the dark) In a state of ignorance; uninformed.

Colored, Unilluminated, Gloomy, Moody, Dusky, Stygian, Tenebrous, Unlighted, Darkening, Unlit, Blue, Twilit, Lightless, Dim, Darkened

Flickering, Glinting, Deteriorating, Reddens, Twinkling, Refracts, Dappling, Enveloping, Glooming, Worsening, Clouding, Dimming, Brightening, Blackening, Dark

Colored, Unilluminated, Gloomy, Moody, Dusky, Stygian, Tenebrous, Unlighted, Darkening, Unlit, Blue, Twilit, Lightless, Dim, Darkened

Flecking, Flickering, Glinting, Deteriorating, Reddens, Twinkling, Refracts, Dappling, Enveloping, Glooming, Worsening, Clouding, Dimming, Brightening, Dark

Pie includes a dark theme which is automatically triggered when one uses a dark wallpaper.
If you enjoy the luxury of dark granite countertops and dark cabinets, make sure to create a contrast.
If you prefer a dark color scheme, try the Fusion Dark Portfolio template.
Irish origin who had dark features, black hair, dark complexion and eyes.
Our dark times were definitely dark but through ruin comes creation.
Dark Armor set that makes you look like Dark Link.
As said earlier Facebook can be a dark dark place.
How dark is too dark as a matter of law?
At the time of this accident the plaintiffs were walking in the dark, on a dark road, wearing dark clothes.
Dark ink includes black, dark blue, dark purple, dark green or dark brown.

Silvia whispered, fear of the future darkening her eyes.
Cloth backed printed boards, spine splitting, darkening to edges.
The windows have room darkening shades and curtains.
Darkening sufficient for transillumination shallbe available when necessary.
Has this type of darkening ever occurred before?
Mirror has some minor scratches and slight darkening.
My mood is light, though darkening very gradually.
Dumbledore smiles mildly, then pauses, his face darkening.
Latisse include a permanent darkening of the iris and a possibly reversible darkening of the eyelid.
August evenings and darkening for Christmas break, lighting up cold January nights and then darkening again in May.