What's the difference between acuate and vacuate?

Acuate

Definition:

• (v. t.) To sharpen; to make pungent; to quicken.
• (a.) Sharpened; sharp-pointed.

Example Sentences:

• (1) This method is sensitive and acuate with good reproducibility.

Vacuate

Definition:

• (v. t.) To make void, or empty.

Example Sentences: