parasol vs umbrella

parasol

verb
  • To protect with, or as if with, a parasol; to shade. 

noun
  • A miniature paper umbrella used as a decoration in tropical-themed cocktails. 

  • A roof or covering of a structure designed to provide cover from wind, rain, or sun. 

  • The parasol mushroom, Macrolepiota procera 

  • A small light umbrella used as protection from the sun. 

  • Any of various Asian species of libellulid dragonfly of the genus Neurothemis. 

umbrella

verb
  • To cover or protect, as if by an umbrella. 

  • To move like a jellyfish. 

  • To form the dome shape of an open umbrella. 

noun
  • Something that covers a wide range of concepts, purposes, groups, etc. 

  • The main body of a jellyfish, excluding the tentacles. 

  • A cloth-covered frame used for protection against rain or sun. 

  • Generally, anything that provides protection. 

  • An umbrella-shaped reflector with a white or silvery inner surface, used to diffuse a nearby light. 

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