lalxu -la'u- gismu

x₁ is a lake/lagoon/pool at site/within land mass x₂.

In notes:

daplu: x₁ is an island/atoll/key of [material/properties] x₂ in surroundings/body x₃; x₁ is insular.
djacu: x₁ is made of/contains/is a quantity/expanse of water; (adjective:) x₁ is aqueous/[aquatic].
rirxe: x₁ is a river of land mass x₂, draining watershed x₃ into x₄/terminating at x₄.
xamsi: x₁ is a sea/ocean/gulf/[atmosphere] of planet x₂, of fluid x₃; (adjective:) x₁ is marine.
zbani: x₁ is a bay in/of coast/shoreline x₂.
brajau: x1 is a big expanse of water, river/sea/lake
jacysocla'u: x₁=l₁=s₁ is a reservoir at x₂=l₂
limla'u: la₁ is a pool where li₁ swims in fluid li₂.
dalkastora: x₁ is a beaver (genus Castor) of taxon x₂
vanlamigu: x₁ is sunlight reflected by a pool of water in the evening