The term "furthest points" can be substituted with several synonyms, including "outermost edges," "farthest corners," "extreme ends," and "remotest boundaries." These phrases all refer to the farthest, most distant points of a particular space or area. Other synonyms for "furthest points" include "terminal points," "peripheries," "margins," and "borders." These terms can be particularly useful when describing geographical locations, including the furthest points of a country or continent. They can also be used in more abstract contexts, such as discussing the furthest points of an argument or idea. Whatever the usage, these synonyms help to convey the idea of something being at the very limits or edges of a given space or concept.