Organization
Part of speech: noun
Definition: The quality of being organized. The way in which something is organized, such as a book or an article. A group of people or other legal entities with an explicit purpose and written rules. A group of people consciously cooperating.
Example sentence: There is no reason why good cannot triumph as often as evil. The triumph of anything is a matter of organization. If there are such things as angels, I hope that they are organized along the lines of the Mafia.
Organisation
Part of speech: noun
Definition: The quality of being organized.
Example sentence: Every political party, rotary club, every college, school, all organisations organise running events. This is something that ignites the aspirations of people.