cement vs reinforce

cement

verb
  • To unite firmly or closely. 

  • To overlay or coat with cement. 

  • To affix with cement. 

  • To make permanent. 

noun
  • Any material with strong adhesive and cohesive properties such as binding agents, glues, grout. 

  • The paste-like substance resulting from mixing such a powder with water, or the rock-like substance that forms when it dries. 

  • The layer of bone investing the root and neck of a tooth; cementum. 

  • A powdered substance produced by firing (calcining) calcium carbonate (limestone) and clay that develops strong cohesive properties when mixed with water. The main ingredient of concrete. 

  • A bond of union; that which unites firmly, as persons in friendship or in society. 

reinforce

verb
  • To strengthen, especially by addition or augmentation. 

  • To emphasize or review. 

  • To encourage (a behavior or idea) through repeated stimulus. 

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