excreta vs urine

excreta

noun
  • Bodily waste which is excreted from the body. 

urine

noun
  • Liquid waste consisting of water, salts, and urea, which is made in the kidneys, stored in the bladder, then released through the urethra. 

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