Instance and Core

instance

An occurrence of something.
- usage: "it was a case of bad judgment"; "another instance occurred yesterday"; "but there is always the famous example of the Smiths"
- synonyms: case, example
An item of information that is typical of a class or group.
- usage: "this patient provides a typical example of the syndrome"; "there is an example on page 10"
- synonyms: example, illustration, representative

(n.) That which is instant or urgent; motive.
(n.) That which offers itself or is offered as an illustrative case; something cited in proof or exemplification; a case occurring; an example.
(n.) Occasion; order of occurrence.
(n.) The act or quality of being instant or pressing; urgency; solicitation; application; suggestion; motion.
(v.t.) To mention as a case or example; to refer to; to cite; as, to instance a fact.
(n.) A token; a sign; a symptom or indication.
(v.i.) To give an example.

Webster's Revised Unabridged Dictionary

core

A small group of indispensable persons or things.
- usage: "five periodicals make up the core of their publishing program"
- synonyms: nucleus, core group
The center of an object.
- usage: "the ball has a titanium core"
The central part of the Earth.
The choicest or most essential or most vital part of some idea or experience.
- usage: "the gist of the prosecutor's argument"; "the heart and soul of the Republican Party"; "the nub of the story"
- synonyms: kernel, substance, center, centre, essence, gist, heart, heart and soul, inwardness, marrow, meat, nub, pith, sum, nitty-gritty
A cylindrical sample of soil or rock obtained with a hollow drill.
An organization founded by James Leonard Farmer in 1942 to work for racial equality.
- synonyms: Congress of Racial Equality
The central meaning or theme of a speech or literary work.
- synonyms: effect, essence, burden, gist
Computer science. ( a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories)
- usage: "each core has three wires passing through it, providing the means to select and detect the contents of each bit"
- synonyms: magnetic core
The chamber of a nuclear reactor containing the fissile material where the reaction takes place.
A bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil.

(v.t.) To form by means of a core, as a hole in a casting.
(n.) The heart or inner part of a thing, as of a column, wall, rope, of a boil, etc.; especially, the central part of fruit, containing the kernels or seeds; as, the core of an apple or quince.
(n.) The bony process which forms the central axis of the horns in many animals.
(v.t.) To take out the core or inward parts of; as, to core an apple.
(n.) The prtion of a mold which shapes the interior of a cylinder, tube or other hollow casting or which makes a hole in or through a casting; a part of the mold, made separate from and inserted in it, for shaping some part of the casting, the form of which is not determined by that of the pattern.
(n.) The most important part of a thing; the essence; as, the core of a subject.
(n.) The center or inner part, as of an open space; as, the core of a square.
(n.) A Hebrew dry measure; a cor or homer.
(n.) A disorder of sheep occasioned by worms in the liver.
(n.) A body of individuals; an assemblage.
(n.) A miner's underground working time or shift.
(n.) A mass of iron, usually made of thin plates, upon which the conductor of an armature or of a transformer is wound.

Webster's Revised Unabridged Dictionary

(Military) CORE stands for contingency response program

Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.