convex vs verge

convex

noun
  • Any convex body or surface. 

  • A playing card made convex for use in cheating. 

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

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

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

  • having no internal angles greater than 180 degrees. 

  • having an epigraph that is a convex set. 

verge

noun
  • An edge or border. 

  • A rod or staff of office, e.g. of a verger. 

  • The grassy area between the footpath and the street; a tree lawn; a grassed strip running alongside either side of an outback road. 

  • The stick or wand with which persons were formerly admitted tenants, by holding it in the hand and swearing fealty to the lord. Such tenants were called tenants by the verge. 

  • An old measure of land: a virgate or yardland. 

  • The spindle of a watch balance, especially one with pallets, as in the old vertical escapement. 

  • The shaft of a column, or a small ornamental shaft. 

  • A circumference; a circle; a ring. 

  • An extreme limit beyond which something specific will happen. 

  • The eaves or edge of the roof that projects over the gable of a roof. 

verb
  • To be or come very close; to border; to approach. 

  • To bend or incline; to tend downward; to slope. 

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