24 entries under space topic. ×

10
hollow(noun, drop, area, decline, fall)
9
depression(noun, drop, area, decline, fall)
7
hole(noun, drop, area, decline, fall)
6
cavity(noun, area, impression, dip)
6
crater(noun, depression, impression, dip)
5
pit(noun, depression, impression, dip)
3
socket(noun, hole, hollow, pocket)
2
armpit(hole, hollow, pocket, crater)
2
dent(noun, depression, impression, dip)
2
pocket(noun, depression, impression, dip)
2
sinus(noun, hole, hollow, pocket)
1
vacuity(noun, depression, impression, dip)
1
void(noun, depression, impression, dip)
0
atrium(hole, hollow, pocket, crater)
0
bursa(noun, hole, hollow, pocket)
0
caries(noun, hole, hollow, pocket)
0
chamber(reservoir, hole, hollow, pocket)
0
cleft(noun, hole, hollow, cup)
0
crack(hole, hollow)
0
decay(hole, hollow, pocket, crater)
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APASmart Define. (2016). basin thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/basin/thesaurus/synonyms
ChicagoSmart Define. 2016. "basin thesaurus" https://smartdefine.org/basin/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, basin thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/basin/thesaurus/synonyms>.
MLASmart Define. "basin thesaurus" 22 March 2016. Web. 22 September 2026. <https://smartdefine.org/basin/thesaurus/synonyms>