burgomaster vs mayor

burgomaster and mayor both are nouns.

Word	Noun	Adjective	Verb	Adverb
burgomaster	Yes	No	No	No
mayor	Yes	No	No	No

As nouns, mayor is a hypernym of burgomaster; that is, mayor is a word with a broader meaning than burgomaster:

burgomaster: a mayor of a municipality in Germany or Holland or Flanders or Austria
mayor: the head of a city government

Other hypernyms of burgomaster include city manager.

burgomaster (noun)	mayor (noun)
a mayor of a municipality in Germany or Holland or Flanders or Austria	the head of a city government