Hey, there are many types of Feather you may want to know either:
- Feather
- Feather Finish
- Curved Feather
- Back Feather
- Hover Feather
- ...
But, I suggest that you'd rather ask your teacher directly than search the details over the Internet. It would lead to, if you were not experienced, the misunderstanding that they are the same things, oh I hope not.
Best regards,
MSN