blossom vs pseudanthium

blossom

noun
  • A flower, especially one indicating that a fruit tree is fruiting; (collectively) a mass of such flowers. 

  • A blooming period or stage of development; something lovely that gives rich promise. 

  • The state or season of producing such flowers. 

  • The colour of a horse that has white hairs intermixed with sorrel and bay hairs. 

verb
  • To have, or open into, blossoms; to bloom. 

  • To begin to thrive or flourish. 

pseudanthium

noun
  • An inflorescence that looks and functions as if it were a single flower. 

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