servitude vs bondage

servitude and bondage both are nouns.

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

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

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

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

servitude (noun)	bondage (noun)
state of subjection to an owner or master or forced labor imposed as punishment	sexual practice that involves physically restraining (by cords or handcuffs) one of the partners
	the state of being under the control of another person
	the state of being under the control of a force or influence or abstract power