What's the difference between emew and smew?

Emew

---

Definition:

• (n.) See Emu.

Example Sentences:

Smew

---

Definition:

• (n.) small European merganser (Mergus albellus) which has a white crest; -- called also smee, smee duck, white merganser, and white nun.
• (n.) The hooded merganser.

Example Sentences: