a-back vs out of

a-back

prep
  • behind, at the back 

out of

prep
  • From the inside to the outside of. 

  • So as no longer to be in a given condition or state. 

  • Taken from among; expressing a fraction of (a larger number). 

  • Born from a given mother (cf. by). 

  • Not within a given space, area etc. 

  • From a thing or or place as a source, place of origin etc. 

  • Stating the port in which a boat has been registered. 

  • Not in (a given state, condition). 

  • Without; no longer in possession of. 

  • From a given cause or motivation. 

  • From a given material as means of construction. 

  • In. 

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