mayflower vs oxeye

mayflower

noun
  • Any of several plants that flower in May - especially the hawthorn (in Britain) and the trailing arbutus (in the US). 

oxeye

noun
  • Any of a genus of composite plants (Buphthalmum) with large yellow flowers. 

  • Leucanthemum vulgare 

  • A titmouse, especially the great titmouse (Parus major) or the blue titmouse (Parus caeruleus). 

  • The corn camomile (Anthemis arvensis). 

  • Heteranthemis viscidehirta 

  • Heliopsis spp. 

  • A fish Boops boops; the bogue, or box. 

  • Telekia speciosa 

  • The dunlin (Calidris alpina) 

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