bluefin tuna vs horse mackerel

bluefin tuna

noun
  • in the Mediterranean Sea. 

  • Thunnus orientalis, Pacific bluefin tuna, found widely in the northern Pacific Ocean and locally in the south. 

  • Thunnus tonggol, longtail tuna, found in tropical Indo-West Pacific waters. 

  • Thunnus thynnus, Atlantic bluefin tuna, found in both the western and eastern Atlantic Ocean, and also 

  • A member of a species of tuna, Thunnus genus, having blue fins, including 

  • Thunnus maccoyii, southern bluefin tuna. 

horse mackerel

noun
  • Sarda sarda (Atlantic bonito) 

  • Megalaspis cordyla (torpedo scad) 

  • Atule (certain scads) 

  • Alectis indica (Indian threadfish) 

  • Carangoides spp. (island jacks) 

  • Sarda australis (Australian bonito) 

  • Trachurus spp. (jack mackerels). 

  • Gnathanodon speciosus (golden trevally) 

  • Naucrates ductor (pilot fish) 

  • Caranx spp. (certain trevallies) 

  • Selar crumenophthalmus (bigeye scad) 

How often have the words bluefin tuna and horse mackerel occurred in a corpus of books? (source: Google Ngram Viewer )