walking frame vs walking stick

walking frame

noun
  • A framework device used to support either an infant learning to walk or a person with walking difficulties. 

walking stick

noun
  • A tool, such as a cane, used to ease pressure on the legs, and to aid stability, when walking. 

  • A stick insect (order Phasmida). 

  • A playing card with the rank of seven. 

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