bum-sucking vs saponaceous

bum-sucking

adj

  • Obsequious. 

noun

  • Obsequious behaviour. 

saponaceous

adj

  • Slippery; evasive. 

  • Resembling soap; having the qualities of soap; soapy. 

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