accrue vs run up

accrue

verb
  • To increase, to rise 

  • To become an enforceable and permanent right. 

  • To accumulate. 

  • To reach or come to by way of increase; to arise or spring up because of growth or result, especially as the produce of money lent. 

  • To be incurred as a result of the passage of time. 

run up

verb
  • To rise; to swell; to grow; to increase. 

  • To approach (an event or point in time). 

  • To accumulate (a debt). 

  • To thrust up, as anything long and slender. 

  • To make something, usually an item of clothing, very quickly. 

  • To take to a destination or before an authority. 

  • Used other than figuratively or idiomatically: see run, up. 

  • Of a bowler, to run, or walk up to the bowling crease in order to bowl a ball. 

  • To bring (a flag) to the top of its flag pole. 

  • To run (towards someone or something); to hasten to a destination. 

  • To erect hastily, as a building. 

  • To string up; to hang. 

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