Abstract: In this seminar, taking into account matter, angular momentum, and gravitational waves, I will discuss the area bound for black hole horizons in four-dimensional spacetimes with a positive cosmological constant. Furthermore, we will attempt to extend the concept of the attractive gravity probe surface, originally defined for asymptotically flat spacetimes, to spacetimes with a positive cosmological constant. As a result, we obtain unified area inequalities for both black hole and cosmological horizons, characterized by a certain parameter.