The Darkness score is a measure of your 'evil'. You get negative Darkness for acts that helps humans, and positive points for those that really harm them. As far as I am able to tell, there is no obvious in-game effect, though it may determine what adventures you are offered.
The opposite of lightning is darkness or nightfall.
Nightfall is the time of day immediately following sunset.
Evil and darkness.
Yes, "nightfall" is a compound word formed by combining "night" and "fall." It refers to the onset of night or the time when darkness begins to set in. Compound words like this are created by merging two or more words to convey a specific meaning.
When the Earth rotates during the day, half of it will be pointing to the sun which creates morning. When it rotates away from the sun, it creates nightfall. This is why Japan is at least 12 hours behind from Montreal. When it's morning there, it's nightime here.
Movement was restricted until nightfall to minimize the risk of being detected by enemy troops or surveillance during daylight hours, reducing the likelihood of being ambushed or attacked. Night operations provided cover of darkness which increased the chances of successful movement without being easily spotted.
Nightfall, dark, darkness, ebon, ebony, gloaming, eve, evening, midnight, wee hours.
Nightfall, also known as twilight, typically lasts for about 30-40 minutes after sunset. It is the period when the sky gradually darkens as the sun goes below the horizon. During this time, the sky transitions from the blue hour to complete darkness.
The answer to the riddle "What falls and never breaks" is "night." Nightfall refers to the time when daylight ends and darkness begins, and it happens regularly without any physical breaking.
'Nightfall' by Isaac Asimov.
The people of Lagash refer to night as "the great shadow," associating darkness with fear and the unknown due to their world being constantly bathed in sunlight.
The Oblivion is made of darkness and light and colored black. Riku is consumed by the darkness, so the Oblivion resembles how Riku is.