flip-flop vs slipper

flip-flop

noun
  • A sandal consisting of a rubber sole fastened to the foot by a rubber thong fitting between the toes and around the sides of the foot. 

  • A return trip. 

  • A bistable; an electronic switching circuit that has either two stable states (switching between them in response to a trigger) or a stable and an unstable state (switching from one to the other and back again in response to a trigger), and which is thereby capable of serving as one bit of memory. 

  • An instance of flip-flopping, of repeatedly changing one's stated opinion about a matter. 

  • A change of places; an inversion or swap. 

  • The sound of a regular footfall. 

  • A somersault. 

verb
  • To alternate back and forth between directly opposite opinions, ideas, or decisions. 

slipper

noun
  • A flip-flop (type of rubber sandal). 

  • A low soft shoe that can be slipped on and off easily. 

  • The plimsoll or gym shoe used in this form of punishment. 

  • A kind of bedpan urinal shaped like a shoe. 

  • A kind of brake or shoe for a wagon wheel. 

  • A person who slips. 

  • A piece, usually a plate, applied to a sliding piece, to receive wear and permit adjustment; a gib. 

  • A kind of apron or pinafore for children. 

  • A form of corporal punishment where the buttocks are repeatedly struck with a plimsoll; "the slipper". 

  • Such a shoe intended for indoor use; a bedroom or house slipper. 

verb
  • To spank with a plimsoll as corporal punishment. 

How often have the words flip-flop and slipper occurred in a corpus of books? (source: Google Ngram Viewer )