You searched for: “tautonym
tautonym (s), tautonyms (pl)
1. A scientific name in which the same word is used for genus and species (Chloris chloris; the greenfinch). It is said that this practice is no longer approved by the International Code of Botanical Nomenclature.
2. A taxonomic designation; such as, Gorilla gorilla and Apus apus (common swift); in which the genus and species names are the same, commonly used in zoology but no longer in botany.
3. Words that are double strings: "The following words are tautonyms: beriberi, booboo, coco, mama, murmur, and papa."