What is the correct terminology for 'keys' and 'values' in EXIF?

Keys (Tag Identifiers)

• In EXIF data, keys are referred to as tags or tag identifiers. Each tag has a unique identifier, usually represented as a hexadecimal number. For example, 0x010F is the tag for the camera manufacturer, and 0x0131 is the tag for the software used to process the image.
• These tags are mostly standardized and are used to identify specific types of metadata in an image file.

Values

• The values associated with EXIF tags contain the actual metadata information. These values can be strings, numbers, dates, or other data types depending on what the tag represents.
• For example, the tag 0x010F (Make) might have the value “Canon” if the image was taken with a Canon camera.