leaf vs riff

leaf

noun
  • Anything resembling the leaf of a plant. 

  • A flat section used to extend the size of a table. 

  • One of the teeth of a pinion, especially when small. 

  • The layer of fat supporting the kidneys of a pig, leaf fat. 

  • A Canadian person. 

  • The usually green and flat organ that represents the most prominent feature of most vegetative plants. 

  • A moveable panel, e.g. of a bridge or door, originally one that hinged but now also applied to other forms of movement. 

  • A sheet of any substance beaten or rolled until very thin. 

  • A foliage leaf or any of the many and often considerably different structures it can specialise into. 

  • A sheet of a book, magazine, etc (consisting of two pages, one on each face of the leaf). 

  • Tea leaves. 

  • In a tree, a node that has no descendants. 

  • Cannabis. 

verb
  • To divide (a vegetable) into separate leaves. 

  • To produce leaves; put forth foliage. 

riff

noun
  • A variation on something. 

  • A spoof. 

  • A clever or witty remark. 

  • Listen to one of the greatest guitar riffs of all time! 

  • A repeated instrumental melody line in a song. 

verb
  • To improvise in the performance or practice of an art, especially by expanding on or making novel use of traditional themes. 

  • To riffle. 

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