He is an expert in oenology and has a deep knowledge of wines from around the world.

He sat at the table with a wine glass.

He ordered red wine.

He thinks that war is a necessary evil.

Do you understand the necessity of this project?

That information is unnecessary.

That information is completely unnecessary.

He has a deep interest in oenology.

I like to drink red wine.

32 degrees Fahrenheit is 0 degrees Celsius.