anytime vs someday

anytime

adv
  • At any time 

adj
  • Suitable for any time; not associated with any particular time. 

intj
  • "you're welcome" in response to "thank you" or "thanks." 

someday

adv
  • Sometime; at some unspecified time in the future. 

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