aggregation vs excerption

aggregation

noun
  • The act of collecting together (aggregating). 

  • The state of being collected into a mass, assemblage, or sum (aggregated). 

  • Summarizing multiple routes into one route. 

  • The majority of the parasite population concentrated into a minority of the host population. 

  • Kind of object composition which does not imply ownership. 

  • A collection of particulars; an aggregate. 

excerption

noun
  • The act of excerpting or selecting. 

  • That which is selected or gleaned; an extract. 

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