flux vs outflow

flux

verb
  • To flow as a liquid. 

  • To use flux on. 

  • To melt. 

noun
  • The rate of transfer of energy (or another physical quantity), especially an electric or magnetic field, through a given surface. 

  • A state of ongoing change. 

  • The state of being liquid through heat; fusion. 

  • A chemical agent for cleaning metal prior to soldering or welding. 

  • The act of flowing; a continuous moving on or passing by, as of a flowing stream. 

adj
  • Flowing; unstable; inconstant; variable. 

outflow

verb
  • To flow outward. 

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. 

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