concretization vs line of thought

concretization

noun
  • Something specific which is the result of a process of concretizing a general principle or idea. 

  • The process of concretizing a general principle or idea by delineating, particularizing, or exemplifying it. 

  • An inability to generalize or perform abstraction accompanied by excessive concentration on specific details, as in a mental disorder or in cognition by children. 

line of thought

noun
  • A specific way of thinking about a particular topic, concept, or problem. 

  • Way of thinking. 

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