labor-saving vs methodical

labor-saving

adj
  • Making work easier or faster. 

methodical

adj
  • In an organized manner; proceeding with regard to method; systematic. 

  • Arranged with regard to method; disposed in a suitable manner, or in a manner to illustrate a subject, or to facilitate practical observation. 

How often have the words labor-saving and methodical occurred in a corpus of books? (source: Google Ngram Viewer )