Tree toad and Toad frog

Tree toad noun - Arboreal amphibians usually having adhesive disks at the tip of each toe; of southeast Asia and Australia and America.

Toad frog and tree toad are semantically related. In some cases you can use "Toad frog" instead a noun phrase "Tree toad".

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

Tree toad and toad frog are semantically related. Sometimes you can replace phrase "Tree toad" with "Toad frog", this phrases are similar.