Mounds, noun plural of mound. Synonyms in the same form.
Hillock
hillocks, knolls, barrows, hammocks, hummocks
Heap
heaps, cumuli, agglomerates, cumulations
Orb
orbs, globes
Hill
hills
Other
pitchers, ramparts, mountains, bulwarks, moles, hands, pile-ups
All synonyms for mound →