amass vs cull

amass

verb
  • to gather a great quantity of; to accumulate. 

  • To accumulate; to assemble. 

  • To collect into a mass or heap. 

cull

verb
  • To gather, collect. 

  • To select animals from a group and then kill them in order to reduce the numbers of the group in a controlled manner. 

  • To pick or take someone or something (from a larger group). 

  • To kill (animals etc). 

  • To lay off in order to reduce the size of, get rid of. 

noun
  • A lobster having only one claw. 

  • A selection. 

  • An individual animal selected to be killed, or item of produce to be discarded. 

  • A piece unfit for inclusion within a larger group; an inferior specimen. 

  • An organised killing of selected animals. 

  • A fool, gullible person; a dupe. 

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