outflow vs progress

outflow

noun
  • Any outward movement. 

  • Something that flows out of a sewage treatment plant. 

  • The process of flowing out. 

  • A fluid that flows out. 

  • A stream of gaseous material emanating from an active galactic nucleus. 

  • The part of a system that allows material to flow out. 

verb
  • To flow outward. 

progress

noun
  • Movement onwards or forwards or towards a specific objective or direction; advance. 

  • Specifically, advancement to a higher or more developed state; development, growth. 

  • An official journey made by a monarch or other high personage; a state journey, a circuit. 

  • Movement or advancement through a series of events, or points in time; development through time. 

  • Science has made extraordinary progress in the last fifty years. 

verb
  • To develop. 

  • To expedite. 

  • To move, go, or proceed forward; to advance. 

  • To improve; to become better or more complete. 

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