molecule vs speck

molecule

noun
  • A tiny amount. 

  • The smallest particle of a specific element or compound that retains the chemical properties of that element or compound; two or more atoms held together by chemical bonds. 

speck

noun
  • A very small thing; a particle; a whit. 

  • A juniper-flavoured ham originally from Tyrol. 

  • The fat of the hippopotamus. 

  • A tiny spot, especially of dirt etc. 

  • Fat; lard; fat meat. 

  • The blubber of whales or other marine mammals. 

  • A small etheostomoid fish, Etheostoma stigmaeum, common in the eastern United States. 

verb
  • To mark with specks; to speckle. 

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