What's the difference between vellicate and vellicative?

Vellicate

Definition:

• (v. t.) To twitch; to cause to twitch convulsively.
• (v. i.) To move spasmodically; to twitch; as, a nerve vellicates.

Example Sentences:

Vellicative

Definition:

• (a.) Having the power of vellicating, plucking, or twitching; causing vellication.

Example Sentences: