Analogous

Analogous, organs which perform the same function; e.g. the wing of a bird and that of an insect are said to be analogous. The term is used in contradistinction to homologous, in which the organs are built on the same plan: thus the wing of a bird and the arm of a man are homologous, being composed of the same fundamental elements, though greatly modified to perform different functions. Similarly, the hairs of a man, and the feathers of a bird, the quills of a porcupine, and the horn of a rhinoceros are all homologous; the last is only analogous with the horns of cattle and deer, as their structure is totally different.