dress down vs rig out

dress down

verb
  • To wear casual or informal clothes. 

  • To scold. 

rig out

verb
  • To dress; to clothe, especially in an odd or fanciful manner. 

  • to provide with equipment or gear 

  • to expel the holder of an office or other position by means of rigging the election. 

How often have the words dress down and rig out occurred in a corpus of books? (source: Google Ngram Viewer )