educational activity vs preparation

educational activity and preparation both are nouns.

Word	Noun	Adjective	Verb	Adverb
educational activity	Yes	No	No	No
preparation	Yes	No	No	No

educational activity (noun)	preparation (noun)
the activities of educating or instructing; activities that impart knowledge or skill	activity leading to skilled behavior
	preparatory school work done outside school (especially at home)
	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