What's the difference between truckle and truckler?

Truckle

Definition:

• (n.) A small wheel or caster.
• (v. i.) To yield or bend obsequiously to the will of another; to submit; to creep.
• (v. t.) To roll or move upon truckles, or casters; to trundle.

Example Sentences:

Truckler

Definition:

• (n.) One who truckles, or yields servilely to the will of another.

Example Sentences: