Strong derived set is a mathematical term that refers to a set of points in a topological space that cannot be separated by any continuous function. The term strong derived set can also be referred to as the closure of the set of accumulation points of a given set. Other synonyms for strong derived set include the closed limit set, the adherence set, the closure of the limit set, and the boundary set. The strong derived set is an essential concept in topology and has many applications in fields such as physics, engineering, and computer science. Understanding the different synonyms for the strong derived set can aid in comprehending the concept's role in various mathematical applications.