concentrate vs preparation

concentrate and preparation both are nouns.

Word	Noun	Adjective	Verb	Adverb
concentrate	Yes	No	Yes	No
preparation	Yes	No	No	No

concentrate (noun)	preparation (noun)
a concentrated example of something	activity leading to skilled behavior
a concentrated form of a foodstuff; the bulk is reduced by removing water	preparatory school work done outside school (especially at home)
the desired mineral that is left after impurities have been removed from mined ore	the activity of putting or setting in order in advance of some act or purpose
	the act of preparing something (as food) by the application of heat
	the cognitive process of thinking about what you will do in the event of something happening
	(music) a note that produces a dissonant chord is first heard in a consonant chord
	the state of having been made ready or prepared for use or action (especially military action)
	a substance prepared according to a formula

concentrate (verb)	preparation (verb)
cook until very little liquid is left
make denser, stronger, or purer
make central
be cooked until very little liquid is left
make more concise
compress or concentrate
direct one's attention on something
draw together or meet in one common center