flavouring vs seasoner

flavouring

noun
  • Britain standard spelling of flavoring. 

seasoner

noun
  • A conker that has been stored for a whole year and allowed to harden. 

  • A sailor who is hired for a season. 

  • One who, or that which, seasons or gives a relish. 

  • A loafer or beachcomber. 

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