aster vs mayweed

aster

noun
  • Any of several plants of the genus Aster; one of its flowers. 

  • A star-shaped structure formed during the mitosis of a cell. 

mayweed

noun
  • Plants of the genera Matricaria and Tripleurospermum. 

  • corn chamomile, field chamomile, Anthemis arvensis. 

  • A mayflower. 

  • stinking chamomile, Anthemis cotula. 

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