What occurs in tea and grapes?

It seems you're asking about something that occurs in both tea and grapes.

To give you a more specific answer, I need more context. What kind of occurrence are you interested in? Here are some possibilities:

* Chemical compounds: Both tea and grapes contain a variety of beneficial compounds, such as antioxidants, polyphenols, and vitamins.

* Processes: Both tea and grapes undergo processes like fermentation (tea) and ripening (grapes), which affect their flavor and composition.

* Cultivation: Both tea and grapes are cultivated in specific environments and require certain conditions to thrive.

Please provide more information about what you're curious about, and I can give you a more specific answer!