concentrate vs rivet

concentrate

verb
  • To focus one's thought or attention (on). 

  • To approach or meet in a common center; to consolidate. 

  • To increase the strength and diminish the bulk of, as of a liquid or an ore; to intensify, by getting rid of useless material; to condense. 

  • To bring to, or direct toward, a common center; to unite more closely; to gather into one body, mass, or force. 

noun
  • A substance that is in a condensed form. 

rivet

verb
  • To command the attention of. 

  • To attach or fasten parts by using rivets. 

  • To make firm or immovable. 

  • To install rivets. 

noun
  • Any fixed point or certain basis. 

  • A cylindrical mechanical fastener that attaches multiple parts together by fitting through a hole and deforming the head(s) at either end. 

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