It is just the name..just like how we call our planet in english "the earth"..but in my native language it is called "Bumi"..they are referred to the same object
You must confusing the term "devil"..which is usually referring to bad things..well as we know Luffy is a good guy even after he ate Devil Fruit..he use his power for good things..
so yeah, probably somewhere in onepiece, there are people called it angelfruit..just like Wano call it "a magic" or "a ninjutsu"..but in majority it is called Devil Fruit..the power to transform into budha, the power to creat tsunami, transfor into fire, those power are divinely enough for me