Interface

using System;

namespace ООП
{
    class Program
    {
        static void Main(string[] args)
        {
            IMovable movable = new Car();
        }
    }

    interface IMovable
    {
        void Move();
    }

    class Car : IMovable
    {
        public void Move()
        {

        }
    }

    class Human : IMovable
    {
        public void Move()
        {

        }
    }
}