set vs core

set and core both are nouns.

Word	Noun	Adjective	Verb	Adverb
set	Yes	Yes	Yes	No
core	Yes	No	Yes	No

As nouns, core is a hyponym of set; that is, core is a word with a more specific, narrower meaning than set:

set: a group of things of the same kind that belong together and are so used
core: a small group of indispensable persons or things

set (noun)	core (noun)
several exercises intended to be done in series	a bar of magnetic material (as soft iron) that passes through a coil and serves to increase the inductance of the coil
the act of putting something in position	the chamber of a nuclear reactor containing the fissile material where the reaction takes place
representation consisting of the scenery and other properties used to identify the location of a dramatic production	(computer science) a tiny ferrite toroid formerly used in a random access memory to store one bit of data; now superseded by semiconductor memories
any electronic equipment that receives or transmits radio or tv signals	the choicest or most essential or most vital part of some idea or experience
(psychology) being temporarily ready to respond in a particular way	the central meaning or theme of a speech or literary work
a relatively permanent inclination to react in a particular way	a small group of indispensable persons or things
the descent of a heavenly body below the horizon	the center of an object
a group of things of the same kind that belong together and are so used	the central part of the Earth
an unofficial association of people or groups	a cylindrical sample of soil or rock obtained with a hollow drill
(mathematics) an abstract collection of numbers or symbols
the process of becoming hard or solid by cooling or drying or crystallization
a unit of play in tennis or squash

set (adjective)	core (adjective)
set down according to a plan
being below the horizon
converted to solid form (as concrete)
fixed and unmoving
(usually followed by `to' or `for') on the point of or strongly disposed
situated in a particular spot or position
determined or decided upon as by an authority

set (verb)	core (verb)
arrange attractively	remove the core or center from
produce fruit
alter or regulate so as to achieve accuracy or conform to a standard
put into a certain state; cause to be in a certain state
set to a certain position or cause to operate correctly
equip with sails or masts
become gelatinous
make ready or suitable or equip in advance for a particular purpose or for some use, event, etc
get ready for a particular purpose or event
fix conclusively or authoritatively
estimate
decide upon or fix definitely
establish as the highest level or best performance
urge to attack someone
put into a certain place or abstract location
fix in a border
give a fine, sharp edge to a knife or razor
insert (a nail or screw below the surface, as into a countersink)
put or set (seeds, seedlings, or plants) into the ground
put into a position that will restore a normal state
adapt for performance in a different way
locate
set in type
apply or start
disappear beyond the horizon