In literature, "retain" serves as a flexible term that often connotes the act of keeping something intact—whether that singular essence of memory or the original quality of a name, title, or structure. At times, authors use it to describe a character’s persistent recollection or the selective endurance of an impression ([1], [2]), while in more concrete descriptions it may refer to the preservation of an original state or defining attribute, as when a settlement or original design continues to exist unchanged ([3], [4]). Even in technical passages, the word enhances descriptions of physical or chemical properties by indicating the ability to hold or preserve certain qualities over time ([5]).