ne'er-do-well vs saprophage

ne'er-do-well

noun

  • A person who is up to no good; a rogue. 

  • A person without a means of support; an idle, worthless person; a loafer; a person who is ineffectual, unsuccessful, or completely lacking in merit; a good-for-nothing. 

adj

  • Showing the characteristics of a ne'er-do-well: indolent, worthless, or roguish. 

saprophage

noun

  • A degenerate person; a wastrel. 

  • A detritivore. 

How often have the words ne'er-do-well and saprophage occurred in a corpus of books? (source: Google Ngram Viewer )