dung beetle vs fig-eater

dung beetle

noun
  • Any of the true dung beetles of subfamily Scarabaeinae. 

  • Any of the beetle of the family Scarabaeidae (scarab beetles), especially of the subfamilies Scarabaeinae and Aphodiinae, noted for rolling dung into balls for use as food or as brooding chambers. 

fig-eater

noun
  • A beetle (Cotinis mutabilis) which ranges from central Texas across the southwestern United States and Mexico. 

  • A bird (Sylvia hortensis) that feeds on figs and grapes, and that people eat as a delicacy. 

  • A large beetle (Cotinis nitida) which has elytra that are velvety green with pale borders, which ranges from eastern Canada to central Texas, and which in the southern United States destroys figs. 

How often have the words dung beetle and fig-eater occurred in a corpus of books? (source: Google Ngram Viewer )