The word emend is used to discuss the correction or improvement of a text, focusing on removing errors and inaccuracies. It is often utilized within the context of editing manuscripts, proofreading articles, and refining written works. This term is reserved for changes that enhance the accuracy or readability of a document.

Use amend when you are discussing the act of making modifications, often to improve or correct. This can apply to various contexts, whether you're talking about adjusting a piece of legislation, correcting behaviors, or even patching up relationships. It implies an enhancement or a fix to something already existing.

While emend is primarily reserved for making corrections within written text, usually to address specific errors, amend can be applied to a wider range of corrections, improvements, or updates, not limited to writing. Amend often carries implications of positive change or reform in legislation, policies, or personal behavior, encompassing a broader concept of modification than emend. Recognizing when to use each term helps maintain precision and clarity in both written and spoken discourse.