button mushroom vs shroom

button mushroom

noun

  • Agaricus bisporus, the white or common mushroom. 

shroom

noun

  • Any mushroom. 

  • A magic mushroom: a hallucinogenic fungus. 

verb

  • To take magic mushrooms. 

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