cuddle up (to) vs snuggle

cuddle up (to)

snuggle

noun
  • The final remnant left in a liquor bottle. 

  • An affectionate hug. 

verb
  • To move or arrange oneself in a comfortable and cosy position. 

  • To lie close to another person or thing, hugging or being cosy. 

How often have the words cuddle up (to) and snuggle occurred in a corpus of books? (source: Google Ngram Viewer )