vertigo vs wobbliness

vertigo

noun
  • A disordered or imbalanced state of mind or things analogous to physical vertigo; mental giddiness or dizziness. 

  • The act of whirling round and round; rapid rotation. 

  • A sensation of whirling and loss of balance, caused by looking down from a great height or by disease affecting the inner ear. 

wobbliness

noun
  • The state of being wobbly. 

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