anomalous vs usual

anomalous

adj
  • Having anomalies. 

  • Of uncertain or unknown categorization; strange. 

  • Deviating from the normal; marked by incongruity or contradiction; aberrant or abnormal. 

usual

adj
  • Most commonly occurring; typical. 

noun
  • A specific good or service (e.g. a drink) that someone typically orders. 

  • The typical state of something, or something that is typical. 

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