outpost vs slub

outpost

noun
  • A military post stationed at a distance from the main body of troops. 

  • An outlying settlement. 

  • The body of troops manning such a post. 

  • A square protected by a pawn that is in or near the enemy's stronghold. 

slub

verb
  • To draw and twist fibers in order to prepare them for spinning. 

noun
  • Fabric fiber produced by slubbing. 

  • A small thickened portion or knot found on linen yarn, caused by defects. 

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