slavery

[1]	enslavement , slave ship , bondage , thrall , slave-trader , bondage , thraldom , thralldom , thraldom , thrall , enthralment , servitude , serfdom , vassalage , yoke , subjugation , captivity , (Historical) (US) peculiar institution
[2]	slave-trade , slaveholding , blackbirder , slave-trader , blackbirding , White slaver , pimp , panderer
[3]	toil , moil , drudgery , travail , grind , strain , (hard) labour