application software vs task

application software

noun
  • A set of computer programs that work together to solve a particular problem or to be used for a particular user-defined application. 

task

noun
  • A process or execution of a program. 

  • Any piece of work done. 

  • A difficult or tedious undertaking. 

  • An objective. 

  • A piece of work done as part of one’s duties. 

verb
  • To charge, as with a fault. 

  • To assign a task to, or impose a task on. 

  • To oppress with severe or excessive burdens; to tax 

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