I now know that the English word for Ninfia is Sylveon.
Good thing I wasn't wrong about Leafeon and Glaceon being Leafia and Glacia. But still, why call it Sylveon if the Japaanese name is Ninfia? Why can't it be Ninfeon? Some people think Ninfia/Sylveon is a Bug type because nymphs are basically bug larvae. Also, WHI IS THER NO EEVEEON?!