convex vs serpentine

convex

adj
  • Curved or bowed outward like the outside of a bowl, circle, or sphere. 

  • arranged such that for any two points in the set, a straight line between the two points is contained within the set. 

  • having no internal angles greater than 180 degrees. 

  • having an epigraph that is a convex set. 

noun
  • A playing card made convex for use in cheating. 

  • A small convex mirror used to cheat by observing other players' cards. 

  • Any convex body or surface. 

serpentine

adj
  • Curving in alternate directions; sinuous. 

  • Of, pertaining to, or characteristic of snakes. 

  • Of, or having attributes associated with, the serpent referred to in the book of Genesis in the Bible, such as craftiness or deceitfulness. 

  • Having the form or shape of a snake. 

noun
  • Any of several green/brown minerals consisting of magnesium and iron silicates that have similar layered crystal structure. 

  • An early form of cannon, used in the 16th century. 

  • in dressage, a winding walk across on the arena 

  • An outcrop or region with soil and rock dominated by these minerals. 

  • Any of several plants believed to cure snakebites. 

  • A kind of firework. 

  • A coiled distillation tube. 

  • Any of several related cubic curves; anguinea 

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