What's the difference between siker and siver?

Siker

Definition:

• (a.) Sure; certain; trusty.
• (adv.) Surely; certainly.
• (n.) Alt. of Sikerness

Example Sentences:

Siver

Definition:

• (v. i.) To simmer.

Example Sentences:

• (1) It is evident that the siver-reducing component detected in the nucleoli of fixed cells (6) is a completely different substance.