aggregation vs clustering

aggregation

noun
  • A collection of particulars; an aggregate. 

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

  • Summarizing multiple routes into one route. 

  • The act of collecting together (aggregating). 

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

  • Kind of object composition which does not imply ownership. 

clustering

noun
  • A grouping of a number of similar things. 

  • The undesirable contiguous grouping of elements in a hash table. 

  • A prewriting technique consisting of writing ideas down on a sheet of paper around a central idea within a circle, with the related ideas radially joined to the circle using rays. 

  • The grouping of a population based on ethnicity, economics or religion. 

adj
  • Forming a cluster. 

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