What's the difference between treenail and trunnel?

Treenail

Definition:

• (n.) A long wooden pin used in fastening the planks of a vessel to the timbers or to each other.

Example Sentences:

Trunnel

Definition:

• (n.) A trundle.
• (n.) See Treenail.

Example Sentences:

• (1) A partial resolution of this divergence of hypotheses comes from the biopsychosocial model developed by Keye and Trunnel.