Compounds of ご馳走

• ご馳走
  (n) (1) feast
  treating (someone)
  (vs) (2) to treat (someone, e.g. to a meal)
  (P)
• ご馳走さま
  (int) (1) word used after one has been treated (esp. used after a meal)
  (2) used after hearing something lovey-dovey
  (P)
• ご馳走様でした
  (exp) said after meals