dropbox vs outbox

dropbox

noun
  • A box wherein objects can be deposited by one person for later collection by another. 

  • A computer folder to which files may be dragged and dropped and from which users of other computers on the network can access those files. 

  • An enhancement to a loom that allows patterns of multiple colors to be woven from the same loom. 

outbox

noun
  • A box holding papers to be transmitted to others, eg, by mail. 

  • An electronic folder serving the same purpose, for electronic mail. 

verb
  • To box better than. 

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