Stochastic

Stochastic (/stəˈkæstɪk/; from Ancient Greek  στόχος (stókhos) 'aim, guess')[1] refers to the property of being well described by a random probability distribution.[1] Although stochasticity and randomness are distinct in that the former refers to a modeling approach and the latter refers to phenomena themselves, these two terms are often used synonymously. Furthermore, in probability theory, the formal concept of a stochastic process is also referred to as a random process.[2][3][4][5][6]

https://en.wikipedia.org/wiki/Stochastic