thrall vs servitude

thrall and servitude both are nouns.

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

As nouns, servitude is a hyponym of thrall; that is, servitude is a word with a more specific, narrower meaning than thrall:

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

Other hyponyms of thrall include bonded labor, serfdom, serfhood, vassalage.

thrall (noun)	servitude (noun)
someone held in bondage	state of subjection to an owner or master or forced labor imposed as punishment
the state of being under the control of another person