referral vs wire transfer

referral

noun
  • The act or process of transferring someone or something to another, of sending by reference, or referring. 

  • A document used by schools detailing some form of a student's misbehavior and listing the actions taken before and after the student's receipt of the referral. 

wire transfer

noun
  • A transfer of funds between banks by electronic means. 

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