As adjectives the difference between semicircular and demilune

is that semicircular is in the shape of half of a circle or a semicircle while demilune is (of furniture) in the shape of a half-moon, ie semicircular.

As a noun demilune is

a fortification constructed beyond the main ditch of a fortress, and in front of the curtain between two bastions, intended to defend the curtain; a ravelin.

As nouns the difference between fortification and demilune

is that fortification is the act of fortifying; the art or science of fortifying places to strengthen defence against an enemy while demilune is a fortification constructed beyond the main ditch of a fortress, and in front of the curtain between two bastions, intended to defend the curtain; a ravelin.

As an adjective demilune is

in the shape of a half-moon, i.e. semicircular.

As adjectives the difference between organized and superorganized

is that organized is of a person, characterised by efficient organisation while superorganized is (informal) very organized.

As a verb organized

is (organize).

As a noun temperature

is the state or condition of being tempered or moderated.

As an adjective ultracooled is

cooled to a very low temperature.

As a noun Jew

is an adherent of Judaism.

As a verb Jew

is alternative case form of jew.

As an adjective Jewless is

without Jews.

As nouns the difference between mantelpiece and chimneypiece

is that mantelpiece is a shelf that is affixed to the wall above a fireplace while chimneypiece is a mantelpiece.

As a noun compartment

is a room, or section, or chamber.

As an adjective compartmentlike is

resembling a compartment.

As a noun megaflora

is any exceptionally large plant.

As an adjective megafloral is

of or pertaining to megaflora.

As an adjective miofloral is

of or pertaining to mioflora.

As a noun microflora

is microscopic plant life, especially the bacterial colonies found in the gut of normal, healthy animals and humans.

As an adjective microfloral is

of or pertaining to microflora.