Bottle gourd is a climber because bottle gourd plants have weak stems, they can't stand up on their own. Tendrils, on the other hand, are a feature of this plant.
Bottle gourd is a plant of the Cucurbitaceae family, which includes cucumbers.
Tendrils are slender curling structures that aid in the plant's anchoring to stiff supports. And it aids its growth by allowing it to ascend and therefore grow in length.
As a result, the bottle gourd is a climber.
To expand in length, it requires any type of hard support. As a result, it climbs on other plants with strong stems, trees, and rods and sticks.
Creepers, on the other hand, spread horizontally and are unable to ascend vertically.