What we mean by reality is the conditioning factors in constant motion present within objective conditions present at a time. We perceive reality through five senses and mistake it as compartmentalized, motionless and predictable, on contrary, reality is a process in constant transformation.
For example; Starvation can be the reality of society while vice versa for other societies with different conditions and social relations. Chattel slavery once was a concrete reality and now it is history.
Reality is therefore in constant motion, it is a process that changes with changing objective conditions available at a particular time and place.
Material is changing due to contradictions. Dialectical materialism.
Definition of reality
Social Reality is a process