fig marigold vs goat's-beard

fig marigold

noun
  • Any of the South African flowering plants of the family Aizoaceae. Members of the family include ice plants, living stones, pebble plants, and split rocks. 

goat's-beard

noun
  • A woodland plant of the family Rosaceae, Aruncus dioicus. 

  • A yellow-flowered Eurasian plant, of the genus Tragopogon. 

How often have the words fig marigold and goat's-beard occurred in a corpus of books? (source: Google Ngram Viewer )