below vs downstream

below

prep
  • Unsuitable to the rank or dignity of; beneath. 

  • Downstage of. 

  • Lower in spatial position than. 

  • Lower than in value, price, rank, concentration, etc. 

  • South of. 

  • Downstream of. 

adv
  • On or to a lower deck, especially as relative to the main deck. 

  • On or to a lower storey. 

  • Later in the same text. 

  • In or to a lower place. 

  • Below zero. 

downstream

adv
  • Following the path of a river or stream 

verb
  • To stream downward. 

adj
  • Further along in the flow of current, in relation to a river, stream, bloodstream, or other flow of fluid. 

  • In the direction from the server to the client. 

  • Towards the 3′ end of a DNA molecule. 

  • Occurring later than something else; (also, usually, especially) influenced by something else; being a consequence of something else. 

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