spoke vs stair

spoke

noun
  • A rung of a ladder. 

  • A projecting handle of a steering wheel. 

  • A support structure that connects the axle or the hub of a wheel to the rim. 

  • One of the outlying points in a hub-and-spoke model of transportation. 

  • A device for fastening the wheel of a vehicle to prevent it from turning when going downhill. 

verb
  • simple past tense of speak 

  • To furnish (a wheel) with spokes. 

stair

noun
  • A single step in a staircase. 

  • A series of steps; a staircase. 

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