immediately vs peremptorily

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. 

peremptorily

adv
  • In a peremptory manner; in a commanding tone, brooking no delay. 

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