Cave vs Hollow

When to use each in English, with meaning, register, and examples.

	Cave	Hollow
Meaning	A large hole in the ground or in the side of a mountain.	Having a space inside; not solid.
CEFR level	B2	B2
Part of speech	noun	adjective
Usage notes	Used in both casual and formal contexts. Often discussed in relation to nature, geology, or adventure. Not typically used in a figurative sense.	Used when describing objects that are empty inside, such as a hollow tree or hollow shell. Avoid using in overly formal contexts.

Frequently asked questions: Cave vs Hollow

What's the difference between "Cave" and "Hollow"?

"Cave" means: A large hole in the ground or in the side of a mountain. "Hollow" means: Having a space inside; not solid.

When should I use "Cave" and "Hollow"?

They can all be used in everyday English.

Are "Cave" and "Hollow" the same CEFR level?

"Cave" is at B2, "Hollow" is at B2 on the CEFR scale.