blindside vs clump

blindside

verb
  • To attack (a person) on his or her blind side. 

  • To catch off guard; to take by surprise. 

noun
  • The blindside flanker, a position in rugby union, usually number 6. 

  • A person's weak point. 

  • A tram/train driver's field of blindness around a tram (trolley/streetcar) or a train; the side areas behind the tram/train driver. 

  • The space on the side of the pitch with the shorter distance between the breakdown/set piece and the touchline; compare openside. 

  • A driver's field of blindness around an automobile; the side areas behind the driver. 

clump

verb
  • To strike; to beat. 

  • To gather in dense groups. 

  • To form clusters or lumps. 

  • To walk with heavy footfalls. 

noun
  • A thick group or bunch, especially of bushes or hair. 

  • A small group of trees or plants. 

  • A cluster or lump; an unshaped piece or mass. 

  • A dull thud. 

  • A thick addition to the sole of a shoe. 

  • The compressed clay of coal strata. 

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