"One as well as the other" is a phrase used to refer to two things that are equal or comparable in some way. However, there are many synonyms that can be used to convey the same meaning. For example, "both" is a simple and straightforward alternative, while "each" emphasizes the individual characteristics of the two items being discussed. "Equally" and "similarly" can also be used to suggest that both things under consideration share the same qualities. Other options include "alike", "likewise", and "in common". By using different synonyms for "one as well as the other", writers can vary their phrasing and avoid repetition.