Salientian and Tree-frog

Salientian noun - Any of various tailless stout-bodied amphibians with long hind limbs for leaping; semiaquatic and terrestrial species.

Tree-frog and salientian are semantically related. In some cases you can replace phrase "Tree-frog" with "Salientian", this terms are similar.

Tree-frog noun - Any of various Old World arboreal frogs distinguished from true frogs by adhesive suckers on the toes.

Salientian and tree-frog are semantically related. You can use "Salientian" instead a noun phrase "Tree-frog".