artless vs unmanufactured

artless

adj
  • Poorly made or done; crude. 

  • Free of artificiality; natural. 

  • Having or displaying no guile, cunning, or deceit. 

  • Lacking art, knowledge, or skill; uncultured and ignorant. 

unmanufactured

adj
  • Not manufactured. 

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