mobilization vs roll call

mobilization

noun
  • The marshalling and organizing of troops and national resources in preparation for war, bringing them to a state of readiness for a action. 

  • The transport of a copy of a gene from one chromosome, or one organism to another. 

  • The act of mobilizing. 

  • The softening of rock such that geochemical migration can take place. 

roll call

noun
  • The time of day fixed for such an event. 

  • Such an event in a legislative body in order to determine if a quorum exists. 

  • The subset of those members of a specific group who are present or available out of the full set of all the members of said group. 

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