* Descriptive: The concave surface of the spoon allowed me to scoop up the last bit of ice cream.
* Technical: The telescope's concave mirror focuses light to create a magnified image.
* Figurative: Her expression was concave with sadness, her eyes seeming to sink into her face.
* Contrasting: The concave valley contrasted sharply with the surrounding, sharply peaked mountains.
* Scientific: The concave lens diverges light rays, making objects appear smaller.
Remember, "concave" refers to a surface that curves inward like the inside of a bowl.