klass

noun

1. a group, collection, category or set sharing characteristics or attributes.
2. a group of students or pupils regularly taking classes together, with a teacher
3. a group of students or pupils in a given class room, studying together
4. a social grouping, based on job, wealth, etc.; the division of society into such classes
5. admirable behavior or qualities
6. a category of seats in a train or airplane
7. a rank in the classification of organisms, below phylum and above order
8. a class