i am a thing.teacher hate me.cow like me.monkey eat me.a am a 9 letter word._o__m__y_

答案是tautonyms
tautonyms - the clues all refer to words that repeat in a name or classification.
Teachers hate me : botany no longer allows the same genus and species name
Cows like me : the American bison is bison bison
Gold likes me : the "Gold" software includes tautonyms
Monkeys eat me : the term for "jujube" (a fruit-bearing tree) is Ziziphus zizyphus.