I picked up the leaves that were falling in the park.

I picked up a leaf that was falling in the park.

In this park, there are three beautiful flat leaves.

The leaves of that tree were dyed red.

This tea leaf has a very good aroma.

This tea leaf has a very good aroma.

This lamina is green and is the main site of photosynthesis.

The mesophyll of this plant plays an important role in photosynthesis.

Mr./Ms. Takeba is my best friend.

Mr. Genba is my best friend.