arbitrary vs exogenous

arbitrary

adj
  • Based on individual discretion or judgment; not based on any objective distinction, perhaps even made at random. 

  • Not representative or symbolic; not iconic. 

  • Determined by independent arbiter. 

  • Determined by impulse rather than reason; heavy-handed. 

  • Any, out of all that are possible. 

noun
  • Anything arbitrary, such as an arithmetical value or a fee. 

exogenous

adj
  • Having no meaning in itself, such as an automatically generated sequential identifier. 

  • Growing as an exogen, by successive additions to the outside. 

  • Related to the exogen growth phase. 

  • Produced or originating outside of an organism. 

  • Having a cause external to the infected organism. 

  • Being or relating to a change that comes from outside the model and is not explained by the model. 

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