diadem vs garland

diadem

noun
  • A crown. 

  • Regal power; sovereignty; empire—considered as symbolized by the crown. 

  • An ornamental headband worn as a badge of royalty. 

  • An arch rising from the rim of a crown (rarely also of a coronet), and uniting with others over its centre. 

verb
  • To adorn with a diadem; to crown. 

garland

noun
  • The crown of a monarch. 

  • The top; the thing most prized. 

  • An accolade or mark of honour. 

  • A sort of netted bag used by sailors to keep provisions in. 

  • A grommet or ring of rope lashed to a spar for convenience in handling. 

  • A wreath, especially one of plaited flowers or leaves, worn on the body or draped as a decoration. 

  • A metal gutter placed round a mineshaft on the inside, to catch water running down inside the shaft and run it into a drainpipe. 

verb
  • To deck or ornament something with a garland. 

  • To form something into a garland. 

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