thin-skinned vs with a hide like an elephant

thin-skinned

adj
  • Used other than figuratively or idiomatically: see thin, skinned. 

  • Overly sensitive to criticism; quick to take offence; irritable; touchy 

with a hide like an elephant

How often have the words thin-skinned and with a hide like an elephant occurred in a corpus of books? (source: Google Ngram Viewer )