What's the difference between swinglebar and whippletree?

Swinglebar

---

Definition:

• (n.) A swingletree.

Example Sentences:

Whippletree

---

Definition:

• (n.) The pivoted or swinging bar to which the traces, or tugs, of a harness are fastened, and by which a carriage, a plow, or other implement or vehicle, is drawn; a whiffletree; a swingletree; a singletree. See Singletree.
• (n.) The cornel tree.

Example Sentences: