A Frobenius morphism is a special type of function in algebraic geometry, particularly in the study of finite fields and algebraic varieties. It arises from the Frobenius endomorphism, which raises elements of a field to their p-th power, where p is a prime number. This morphism helps in understanding the structure of varieties over finite fields and plays a crucial role in characteristic p geometry. In the context of commutative algebra, Frobenius morphisms can be used to study the properties of rings and modules. They provide insights into the behavior of algebraic structures under the influence of the prime characteristic, leading to important results in singularity theory and moduli spaces.