flower garden vs outdoors

flower garden

noun
  • A garden where flowers are grown for decorative purposes. 

outdoors

noun
  • The natural environment in the open air, countryside away from cities and buildings. 

  • The environment outside of enclosed structures. 

adv
  • Not inside a house or under covered structure; unprotected; in the open air. 

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