tuck away vs tuck in

tuck away

verb
  • To eat a lot of (something). 

  • To save or hoard (something); to hide (something) in a safe spot; to squirrel away. 

  • To be located in a remote, inaccessible or difficult-to-see spot. 

tuck in

verb
  • To eat heartily. 

  • To place in a small space. 

  • To push (the fabric at the bottom of a shirt) under the pants. 

  • To score from with a casual motion 

  • To pull the blankets or duvet up over (someone in bed); to put (someone) to bed. 

  • To acquire something tiny 

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