What's the difference between vinaceous and vinous?

Vinaceous

---

Definition:

• (a.) Belonging to, or like, wine or grapes.
• (a.) Of the color of wine, especially of red wine.

Example Sentences:

Vinous

---

Definition:

• (a.) Of or pertaining to wine; having the qualities of wine; as, a vinous taste.

Example Sentences:

• (1) The French have always suspected we were a treacherous bunch, but they've just received a poke with a sharp stick to the vinous nether regions.
• (2) Vinous engorgement and increased intracranial blood volume appear to play an important part in the pathophysiology of increased intracranial pressure in benign intracranial hypertension.