(n): several things grouped together or considered as a whole
(n): a body of students who are taught together
(n): a group of persons together in one place
(n): people having the same social, economic, or educational status
(n): (plural) any group of human beings (men or women or children) collectively
(n): education imparted in a series of lessons or meetings
(n): the activities of educating or instructing; activities that impart knowledge or skill
(n): a league ranked by quality
(n): an association of sports teams that organizes matches for its members
(n): a body of students who graduate together
(n): a group of persons together in one place
(n): (biology) a taxonomic group containing one or more orders
(n): animal or plant group having natural relations
(n): elegance in dress or behavior
(n): a refined quality of gracefulness and good taste
(v): arrange or order by classes or categories
(v): place into or assign to a category
"All mankind is divided into three classes: those that are immovable, those that are movable, and those that move." Arabian proverb