half-crown vs sol

half-crown

noun
  • A pre-decimal coin used in Britain, Ireland and New Zealand, equivalent to 30 pence or two shillings and six pence. 

sol

noun
  • An old coin from France and some other countries worth 12 deniers. 

  • A type of colloid in which a solid is dispersed in a liquid. 

  • In a fixed-do system: the musical note G. 

  • A solar day on the planet Mars (equivalent to 24 hours, 39 minutes, 35 seconds). 

  • In full nuevo sol or new sol: the main currency unit of Peru which replaced the inti in 1991; also, a coin of this value. 

  • A former Spanish-American silver coin. 

  • In a movable-do or tonic sol-fa system: the fifth step in a scale, preceded by fa and followed by la. 

How often have the words half-crown and sol occurred in a corpus of books? (source: Google Ngram Viewer )