16 entries under noun topic. ×
| nature | |
| vale | |
| cave | |
| cavity | |
| channel | |
| dale | |
| excavation | |
| hole | |
| hole in the ground | |
| natural depression | |
| niche | |
| small cave | |
| thing | |
| valley | |
| depression | |
| enclosed space |
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| APA | Smart Define. (2015). hollow thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/hollow/thesaurus/broader |
| Chicago | Smart Define. 2015. "hollow thesaurus" https://smartdefine.org/hollow/thesaurus/broader (accessed September 30, 2026). |
| Harvard | Smart Define 2015, hollow thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/hollow/thesaurus/broader>. |
| MLA | Smart Define. "hollow thesaurus" 10 April 2015. Web. 30 September 2026. <https://smartdefine.org/hollow/thesaurus/broader> |