rotational vs swimmy

rotational

adj
  • Of, pertaining to or caused by rotation. 

noun
  • An employee in a job rotation scheme. 

  • Something, such as a joint, that moves by rotating. 

swimmy

adj
  • Dizzy; swirling or moving as if seen in a daze. 

noun
  • An inflatable armband to help children swim. 

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