liegeman vs vassal

liegeman and vassal both are nouns.

Word	Noun	Adjective	Verb	Adverb
liegeman	Yes	No	No	No
vassal	Yes	No	No	No

As nouns, liegeman and vassal are synonyms defined as:

liegeman and vassal: a person holding a fief; a person who owes allegiance and service to a feudal lord

Other synonyms of liegeman include feudatory, liege, liege subject.

liegeman (noun)	vassal (noun)
a person holding a fief; a person who owes allegiance and service to a feudal lord	a person holding a fief; a person who owes allegiance and service to a feudal lord