absorbing something is a mean of gradient for obtaining something
being_trapped is emotion. gradient_across_biological_membrane is event. absorbing_through_eye is bodily_function_event. gravity_gradient is gradient. abundance_gradient is gradient_situation. digestive_absorption is biological_absorption_event. absorbing_through_eye is biological_absorption_event. absorbing_through_skin is biological_absorption_event. absorber is absorbent_material. electrical_potential_difference is abundance_gradient.