servitude vs slavery

servitude and slavery both are nouns.

Word	Noun	Adjective	Verb	Adverb
servitude	Yes	No	No	No
slavery	Yes	No	No	No

As nouns, slavery is a hypernym of servitude; that is, slavery is a word with a broader meaning than servitude:

servitude: state of subjection to an owner or master or forced labor imposed as punishment
slavery: the state of being under the control of another person

Other hypernyms of servitude include bondage, thraldom, thrall, thralldom.

servitude (noun)	slavery (noun)
state of subjection to an owner or master or forced labor imposed as punishment	work done under harsh conditions for little or no pay
	the practice of owning slaves
	the state of being under the control of another person