Microfiche, a term commonly used in libraries and archives, refers to a small sheet of photographic film that contains a miniature version of a document. However, there are several synonymous terms that can be used to refer to microfiche, including microfilm, microcard, ultrafiche, and jacquard. Microfilm is a more general term that refers to a roll or sheet of film containing microscopic images of documents, while a microcard is a flat card containing microfilm. Ultrafiche is a microfiche with a higher magnification level, allowing for even smaller images, and jacquard is a specific type of microfiche that has intricate woven patterns, similar to a textile fabric. While the basic concept remains the same, these synonyms provide various distinctions that can be important in different contexts.