involute vs slalom

involute

verb
  • To roll or curl inwards. 

noun
  • A curve that cuts all tangents of another curve at right angles; traced by a point on a string that unwinds from a curved object. 

adj
  • Turned inward at the margin, like the exterior lip of the shells of species in genus Cypraea. 

  • Difficult to understand; complicated. 

  • Having a complex pattern of coils in which younger whorls only partly surround older ones. 

  • Rolled inward spirally. 

  • Having the edges rolled with the adaxial side outward. 

slalom

verb
  • To move in a slalom-like manner. 

  • To race in a slalom. 

noun
  • A race or competition wherein participants each perform the sport of slalom. 

  • A course used for the sport of slalom. 

  • The sport of skiing in a zigzag course through gates. (Often used attributively) 

  • Any similar activity on other vehicles, including canoes and water skis. 

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