spin-off vs subalternate

spin-off

noun
  • An incidental benefit or unexpected pay-off. 

  • An offshoot. 

  • A fictional work where the protagonist was introduced in a preceding work or at least shares the same setting, often in a different aspect. 

  • By-product. 

  • The formation of a subsidiary company that continues the operations of part of the parent company; the company so formed. 

subalternate

noun
  • A particular proposition, as opposed to a universal one. 

adj
  • Succeeding by turns; successive. 

  • Subaltern; inferior; subordinate. 

How often have the words spin-off and subalternate occurred in a corpus of books? (source: Google Ngram Viewer )