sobbing vs weeper

sobbing

noun
  • Act of one who sobs; a crying or weeping. 

adj
  • That or who sobs. 

weeper

noun
  • A person who weeps. 

  • A weeping tree. 

  • A white border round the sleeve of a mourning dress. 

  • A pleurant. 

  • A widow's crape veil. 

  • A hired mourner. 

  • A thing that slowly leaks liquid. 

  • A crape hatband. 

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