alderman vs assemblyman

alderman

noun
  • A member of a municipal legislative body in a city or town. 

  • A long pipe for smoking. 

  • A potbelly, paunch. 

assemblyman

noun
  • A member of the lower house of certain US state legislatures. 

  • A male member of an assembly. 

How often have the words alderman and assemblyman occurred in a corpus of books? (source: Google Ngram Viewer )