money plant vs money tree

money plant

noun
  • A small, fleshy-leaved plant of the species Crassula ovata 

  • A small plant with very round, dark green leaves, of the species Pilea peperomioides, native to southern China. 

  • Pachira aquatica, a tropical wetland tree, native to Central and South America.known by a variety of common names including 

  • A herbaceous biennial plant of the species Lunaria annua, grown for its attractive spring flowering and dried silver seed pod middles, native 

  • A tropical vining plant of the species Epipremnum aureum, native to northern Australia and much of southern and eastern Asia. 

money tree

noun
  • The jade plant, Crassula ovata. 

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

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

  • 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. 

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