attendant vs incident

attendant

adj
  • Depending on, or owing duty or service to. 

  • Going with; associated; concomitant. 

noun
  • One who attends; one who works with or watches over something. 

  • That which accompanies or follows. 

  • A servant or valet. 

  • One who owes a duty or service to another. 

incident

adj
  • Dependent upon, or appertaining to, another thing, called the principal. 

  • Liable to happen; apt to occur; befalling; hence, naturally happening or appertaining. 

  • Arising as the result of an event, inherent. 

  • Coming or happening accidentally; not in the usual course of things; not in connection with the main design; not according to expectation; casual; fortuitous. 

  • Falling on or striking a surface. 

noun
  • An event that causes or may cause an interruption or a crisis, such as a workplace illness or a software error. 

  • A (relatively minor) event that is incidental to, or related to others. 

  • An event or occurrence. 

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