show oneself vs show up

show oneself

verb
  • Used other than figuratively or idiomatically: see show, oneself. 

  • To expose one's genitalia, especially in an inappropriate setting; to expose oneself. 

show up

verb
  • To make visible; to expose. 

  • To make visible or expose faults and deficiencies in, usually by outdoing, outperforming, or outcompeting another. 

  • To appear, arrive, or attend, especially suddenly or erratically. 

  • To be easily visible; to be conspicuous. 

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