mingle vs refine

mingle

verb
  • To deprive of purity by mixture; to contaminate. 

  • To associate or unite in a figurative way, or by ties of relationship 

  • to cause or allow to intermarry 

  • To become mixed or blended. 

  • to intermarry. 

  • To socialize with different people at a social event. 

  • To make or prepare by mixing the ingredients of. 

  • To intermix; to combine or join, as an individual or part, with other parts, but commonly so as to be distinguishable in the product 

noun
  • The act of informally meeting numerous people in a group 

refine

verb
  • To become pure; to be cleared of impure matter. 

  • To improve in accuracy, delicacy, or excellence. 

  • To purify of coarseness, vulgarity, inelegance, etc.; to polish. 

  • To make nice or subtle. 

  • To purify; reduce to a fine, unmixed, or pure state; to free from impurities. 

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