milksop vs willow in the wind

milksop

noun
  • An easily frightened, ineffectual, or weak person. 

  • A piece of bread sopped in milk. 

  • A dish consisting of bread pieces in a bowl, sprinkled with sugar and covered in hot milk. 

willow in the wind

noun
  • One whose views are easily and regularly changed by the persuasion or influence of others. 

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