The term used to describe a harmless organism resembling a harmful one is mimicry.

There are two main types of mimicry:

* Batesian mimicry: A harmless species evolves to resemble a harmful one. This provides protection for the mimic because predators learn to avoid the harmful model.

* Müllerian mimicry: Two or more harmful species evolve to resemble each other. This strengthens the signal to predators, increasing the effectiveness of the warning coloration for both species.

So, the term mimicry encompasses both these types of evolutionary adaptations.