allspice vs allspice tree

allspice

noun
  • A spice; the dried and ground unripe fruit of Pimenta dioica, thought to combine the flavours of several spices, such as cinnamon, nutmeg and cloves. 

  • Pimenta dioica, an evergreen tree of tropical America with aromatic berries. 

allspice tree

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