chowder vs gumbo

chowder

noun
  • A stew, particularly fish or seafood, not necessarily thickened. 

  • A thick, creamy soup or stew. 

verb
  • To make (seafood, etc.) into chowder. 

gumbo

noun
  • A soup or stew popular in Louisiana, consisting of a strong stock, meat or shellfish, a thickener (often okra), and the "Holy Trinity" of celery, bell peppers, and onions. 

  • Synonym of okra: the plant or its edible capsules. 

  • A fine silty soil that when wet becomes very thick and heavy. 

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