What's the difference between nailer and railer?

Nailer

Definition:

• (n.) One whose occupation is to make nails; a nail maker.
• (n.) One who fastens with, or drives, nails.

Example Sentences:

Railer

Definition:

• (n.) One who rails; one who scoffs, insults, censures, or reproaches with opprobrious language.

Example Sentences: