1. An image reproducing apparatus comprising: a first reading device for reading image data and keyword data representing a desired image from a recording medium on which a number of sets of image data and keyword data have been grouped and recorded, the image data representing an image obtained by picture taking and the keyword data representing a keyword of the image, the image data and keyword data in each set being interrelated; a first display control device for controlling a display device in that a first image represented by the image data read by said first reading device is displayed on a display screen; a command input device for inputting a related-image display command; a second reading device for reading, from the recording medium in response to the related-image display command that has been input from said command input device, image data which is related to keyword data indicative of a keyword identical with the keyword of the first image being displayed under the control of the first display control device, and which is contained in groups different from the group to which the first image belongs; a first reducing device for reducing the image, which is represented by the image data that has been read by said second reading device, to a size smaller than that of the first image; and a second display control device for controlling the display device in that the image reduced in size by the first reducing device is displayed as a related image on the display screen displaying the first image.