lum vs ocean

lum

noun
  • A deep pool, especially one in a riverbed. 

  • A chimney; also, the top part of a chimney. 

  • A ventilating chimney over the shaft of a mine. 

  • A grove or wood; also, a woody valley. 

ocean

noun
  • Water belonging to an ocean. 

  • An immense expanse; any vast space or quantity without apparent limits. 

  • One of the large bodies of water separating the continents. 

  • A blue colour, like that of the ocean (also called ocean blue). 

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