money plant vs silver dollar

money plant

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

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

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

  • 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. 

silver dollar

noun
  • Several species of tropical freshwater fish of the genus Metynnis, of the family Characidae or Serrasalmidae, of which Metynnis argenteus is one; popular for aquariums; so named from their shape and flashing silver color. 

  • A dollar coin, whether made from silver or not. 

  • A small pancake. 

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