.

Structures that are the same but have different functions (forearms of humans, humpback whales, bats, cheetahs) are referred to as:
dichotomous keys
vestigial structures
homologous structures
analogous structures

analogous structures

The structures that are the same but have different functions, such as the forearms of humans, humpback whales, bats, and cheetahs, are referred to as analogous structures.