mollusc vs softy

mollusc

noun
  • A weak-willed person. 

  • A soft-bodied invertebrate of the phylum Mollusca, typically with a hard shell of one or more pieces. 

softy

noun
  • A weak or sentimental person. 

  • A soft toy. 

  • A flaccid state of the penis. 

  • A soft drink containing no alcohol. 

  • A software expert who is ignorant of the workings of hardware. 

  • Somebody who finds it difficult to scold or punish. 

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