pseudo- vs ultra-

pseudo-

prefix
  • False, not genuine, fake 

ultra-

prefix
  • intensely, extremely, or exceptional 

  • Greater than normal quantity or importance, as in ultrasecret. 

  • Excessively, to an extreme, as in ultramicroscopic, ultra-careful. 

  • Beyond, outside of, as in ultrasonic. 

  • Beyond, on the far side of, as in ultraviolet. 

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