thralldom vs slavery

thralldom and slavery both are nouns.

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

As nouns, thralldom and slavery are synonyms defined as:

thralldom and slavery: the state of being under the control of another person

Other synonyms of thralldom include bondage, thraldom, thrall.

thralldom (noun)	slavery (noun)
the state of being under the control of another person	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