What type of collection does Etarcomol and Medb have in common?
Etarcomol Etarconol is a character from the Ulster Cycle in Irish folklore. He is the son of Eda and Léthrenn and a foster-son of Ailill and Medb. He was the first champion to face Cúchulainn in single combat. He was killed as Cúchulainn struck down through his crown and split him "to the navel".
Erythroxylum Erythroxylum ("Erythroxylon") is a genus of tropical flowering plants in the family Erythroxylaceae. Many of the approximately 200 species contain the drug cocaine; "Erythroxylum coca", a native of South America, is the main commercial source of cocaine and of the mild stimulant coca tea. Another species, "Erythroxylum vacciniifolium" (also known as Catuaba) is used as an aphrodisiac in Brazilian drinks and herbal medicine.