money tree vs weed

money tree

noun
  • An imaginary tree from which money can be plucked. See money doesn't grow on trees. 

  • A cheap tree sculpture, decorated with currency, used as a raffle prize because it would be illegal to offer a cash prize. 

  • The jade plant, Crassula ovata. 

  • The cocoa tree, Theobroma cacao. 

  • A kind of holy tree believed to bring money and good fortune. 

  • The Malabar chestnut, Pachira aquatica. 

  • A miniature tree sculpture decorated with currency, often used as a raffle prize or a gift. 

weed

noun
  • Something unprofitable or troublesome; anything useless. 

  • Any plant unwanted at the place where and at the time when it is growing. 

  • Tobacco. 

  • Underbrush; low shrubs. 

  • A sudden illness or relapse, often attended with fever, which befalls those who are about to give birth, are giving birth, or have recently given birth or miscarried or aborted. 

  • A puny person; one who has little physical strength. 

  • Cannabis. 

  • Lymphangitis in a horse. 

  • A weak horse, which is therefore unfit to breed from. 

verb
  • To systematically remove materials from a library collection based on a set of criteria. 

  • To remove unwanted vegetation from a cultivated area. 

  • To pilfer the best items from a collection. 

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