instruction vs preparation

instruction and preparation both are nouns.

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

instruction (noun)	preparation (noun)
the profession of a teacher	activity leading to skilled behavior
the activities of educating or instructing; activities that impart knowledge or skill	preparatory school work done outside school (especially at home)
(computer science) a line of code written as part of a computer program	the activity of putting or setting in order in advance of some act or purpose
a message describing how something is to be done	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