herd vs sea

herd

noun
  • A number of domestic animals assembled together under the watch or ownership of a keeper. 

  • Any collection of animals gathered or travelling in a company. 

  • A crowd, a mass of people or things; a rabble. 

verb
  • To manage, care for or guard a herd 

  • To act as a herdsman or a shepherd. 

  • To unite or associate in a herd 

  • To move or drive a herd. 

  • To associate; to ally oneself with, or place oneself among, a group or company. 

  • To unite or associate in a herd; to feed or run together, or in company. 

  • To form or put into a herd. 

sea

noun
  • A large, dark plain of rock; a mare. 

  • A body of salt water smaller than an ocean, generally forming part of, or connecting with, an ocean or a larger sea. 

  • A large body of salt water. 

  • Living or used in or on the sea; of, near, or like the sea. 

  • A very large lake of liquid hydrocarbon. 

  • A lake, especially if large or if salty or brackish. 

  • The swell of the sea; a single wave; billow. 

  • A constant flux of gluons splitting into quarks, which annihilate to produce further gluons. 

  • The ocean; the continuous body of salt water covering a majority of the Earth's surface. 

  • Anything resembling the vastness or turbulence of the sea. 

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