oyster vs seafood

oyster

noun
  • Any of certain marine bivalve mollusks, especially those of the family Ostreidae (the true oysters), usually found adhering to rocks or other fixed objects in shallow water along the seacoasts, or in brackish water in the mouth of rivers. 

  • A person who keeps secrets. 

  • A shoplifter. 

  • A pale beige color tinted with grey or pink, like that of an oyster. 

  • The delicate morsel of dark meat contained in a small cavity of the bone on each side of the lower part of the back of a fowl. 

adj
  • Of a pale beige colour tinted with grey or pink, like that of an oyster. 

verb
  • To fish for oysters. 

seafood

noun
  • A colloquial term for fish, shellfish, seaweed, and other edible aquatic life. 

  • A general term and regional vernacular for edible marine fish and shellfish. In this context “seafood” is sometimes not deemed as its own food category; rather its considered to be a specific subcategory of meat when the broader definitions of “meat” are being used. 

  • A nutritional term and culinary term for finned fish and shellfish used as food. In some cultures cartilaginous fish may be included. Contextually, other aquatic animals like tetrapods and aquatic plants like seaweed are excluded from the definition. In the nutritional context, culinary context and in some regional vernacular the term “seafood” is ordinarily differentiated from “meat”, which is defined as a separate category of food. 

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