radius vs spoke

radius

noun
  • A line segment between any point of a circle or sphere and its center. 

  • The lighter bone (or fused portion of bone) in the forelimb of an animal. 

  • The long bone in the forearm, on the side of the thumb. 

  • One of the major veins of the insect wing, between the subcosta and the media; the vein running along the costal edge of the discal cell. 

  • Anything resembling a radius, such as the spoke of a wheel, the movable arm of a sextant, or one of the radiating lines of a spider's web. 

  • The length of this line segment. 

spoke

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

  • A projecting handle of a steering wheel. 

  • A rung of a ladder. 

  • 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. 

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