wem vs womb

wem

noun
  • A spot, stain, or mark; (by extension) a (moral) blemish or fault. 

womb

noun
  • A place where something is made or formed. 

  • Any cavity containing and enveloping anything. 

  • In female mammals, the organ in which the young are conceived and grow until birth; the uterus. 

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