get along vs rub along

get along

verb
  • To survive; to do well enough. 

  • To interact or coexist well, without argument or trouble. 

  • To go; to move; to leave. Also, git along. 

rub along

verb
  • To go on with difficulty. 

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