Airbus vs sycamore maple

Airbus

noun

  • An aircraft produced by the Airbus consortium. 

name

  • A European multinational commercial aircraft manufacturer. 

sycamore maple

noun

  • An American plane tree (Platanus occidentalis) 

  • The British and European sycamore tree, Acer pseudoplatanus. 

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