The contraction "there's" is often used in the English language to represent "there is" or "there has". However, there are other synonyms that can be used instead. "There exists" or "there dwells" can be used to convey the idea that something or someone is present in a certain location. "There's a possibility" can be substituted with "there may be a chance" or "it's possible that". Similarly, "there's a problem" can be rephrased as "there is an issue" or "there appears to be a challenge". It's important to have a broad vocabulary to improve communication and avoid repetition in writing or speaking.