drilling rig vs equipage

drilling rig

noun
  • Used other than figuratively or idiomatically: see drilling, rig. 

  • An oil rig. 

equipage

noun
  • Equipment or supplies, especially military ones. 

  • A type of horse-drawn carriage. 

  • The carriage together with attendants; a retinue. 

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