nameplate vs plaquette

nameplate

noun
  • A plate or plaque inscribed with a name. 

  • The masthead of a newspaper. 

plaquette

noun
  • A small metal tablet decorated in bas-relief, usually with a design including figures. 

  • The smallest closed loop, enclosing the region between four lattice sites, in lattice gauge theory. 

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