arse-licking vs fawning

arse-licking

noun

  • Sycophancy. 

  • Anilingus. 

fawning

adj

  • Seeking favor by way of flattery; flattering, servile. 

noun

  • Servile flattery. 

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