As nouns the difference between demigod and superbeing

is that demigod is a half-god or hero; the offspring of a deity and a mortal while superbeing is comic books: a superhero or supervillain.

As nouns the difference between demon and superbeing

is that demon is demon while superbeing is comic books: a superhero or supervillain.

As a proper noun hero

is (greekmyth) any of a number of legendary men and women, including the priestess loved by leander.

As a noun superbeing is

comic books: a superhero or supervillain.

As nouns the difference between sequin and paliette

is that sequin is (historical) any of various small gold coins minted in italy and turkey while paliette is a small, circular reflective plate, somewhat like a large sequin, used to trim clothing.

As adjectives the difference between luminous and superbright

is that luminous is emitting light; glowing brightly while superbright is extremely luminous.

Superbrightness is a derived term of superbright.

As an adjective superbright is

extremely luminous.

As a noun bill

is car (motorcar, automobile).

As an adjective unbilled is

(business) not yet having been billed.

Overruff is a related term of underruff.

In bridge|lang=en terms the difference between overruff and underruff

is that overruff is (bridge) an act of while underruff is (bridge) to ruff with a trump lower than the trump already played by one's opponent.

As verbs the difference between overruff and underruff

is that overruff is (bridge) to ruff with a higher trump following a prior ruff on the same trick while underruff is (bridge) to ruff with a trump lower than the trump already played by one's opponent.

As nouns the difference between overruff and underruff

is that overruff is (bridge) an act of while underruff is an act of.

As a noun speech

is the faculty of uttering articulate sounds or words; the ability to speak or to use vocalizations to communicate.

As an adjective speechlike is

resembling natural human speech.

As nouns the difference between witch and superbeing

is that witch is a person who practices witchcraft; specifically: or witch can be a cone of paper which is placed in a vessel of lard or other fat and used as a taper while superbeing is comic books: a superhero or supervillain.

As a verb witch

is (obsolete) to practise witchcraft.