urination vs wee-wee

urination

noun

  • The process of passing urine, that is, of eliminating liquid waste from the body. 

wee-wee

noun

  • An act of urination. 

  • The penis. 

  • Urine. 

  • The vulva or vagina. 

verb

  • to urinate 

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