immediately vs readily

immediately

adv
  • In an immediate manner; instantly or without delay. 

conj
  • directly (as soon as), instantly, the moment that. Indicates that the independent clause describes something that occurs immediately after the dependent clause's referent does. 

readily

adv
  • Without impediment, easily. 

  • Without unwillingness or hesitation; showing readiness. 

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