Two-track is a term used to describe a process or situation where there are two separate but related approaches to achieving a goal. However, there are several synonyms for this term such as dual-track, parallel track, and double-barreled. Dual-track describes a process where two separate strategies are employed simultaneously, while parallel track implies two tracks running parallel to each other. Double-barreled refers to a method that has two separate and distinct components that are coordinated for a mutual outcome, like a two-pronged approach. In summary, using synonyms for the term "two-track" can add variety and clarity to your writing and conversation.