lackey vs scullery maid

lackey

noun
  • A footman, a liveried male servant. 

  • A fawning, servile follower. 

verb
  • To attend, wait upon, serve obsequiously. 

scullery maid

noun
  • A domestic servant, of lowest status, whose job is to wash dishes and do other menial chores. 

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