Conterminous with is a phrase that denotes two things or entities that share a common boundary. While this phrase is commonly used to describe geographical regions and territories, it can also be used in various settings. Synonyms for this phrase include abutting, adjacent, adjoining, bordering, contiguous, coterminous, and neighboring. These synonyms can be used interchangeably to describe the same relationship, but they may convey different nuances, depending on the context of the sentence. The choice of synonym will depend on the tone, voice, or purpose of the piece of writing. By using these synonyms, writers can vary sentence structure and avoid repetition.