"class" - key terms from Wikipedia

british rail class
business class
character class
class
class	action
class	aircraft carrier
class	b
class	battleship
class	c
class	corvette
class	cruiser
class	destroyer
class	frigate
class	ii
class	iii
class	landing
class	library
class	minesweeper
class	missile boat
class	patrol
class	patrol boat
class	ships
class	struggle
class	submarine
class	winner
economy class
equivalence class
first class
football hall of fame class
iii class
lner class
mhc class
middle class
p class
pitch class
private first class
ruling class
second class
sergeant first class
sncf class
social class
span class
standard class
table class
upper class
upper middle class
weight class
working class
world class
world class	championship wrestling