alluvion vs good luck

alluvion

noun
  • The increase in the area of land due to the deposition of sediment (alluvium) by a river. 

good luck

intj
  • Used to wish fortune on someone or as encouragement. 

noun
  • Desirable or beneficial fortune. 

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