absorption vs coalescing

absorption

noun
  • The process in which incident radiant energy is retained by a substance (such as an air mass) by conversion to some other form of energy (such as heat). 

  • Entire engrossment or occupation of the mind. 

  • Mental assimilation. 

  • The retaining of electrical energy for a short time after it has been introduced to the dielectric. 

  • in living organisms, the process by which the materials of growth and nutrition are absorbed and conveyed to the tissues and organs; taking in by various means, such as by osmosis. 

  • the imbibing or reception by molecular or chemical action, of radiant energy; the process of being neutrons being absorbed by the nucleus; interception. 

  • assimilation; incorporation. 

coalescing

noun
  • coalescence 

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