1. A feeling-expressing-word processing device comprising: one or more processors; a feeling information calculating unit configured to detect at least one dynamic body which are regions of significant movement appearing in a current photographed image, calculate a travel distance and a movement direction of the dynamic body based on a difference between the center of gravity of the dynamic body and the center of gravity of a dynamic body appearing in a previously-photographed image, and calculate feeling information which includes one or more of a number of faces, a tilt of a face, the number of dynamic bodies, transition information of the dynamic body, and a change in luminance of the current image as the feeling information which indicates a situation of a scene portrayed in the current photographed image, a condition of an object present in the scene, a temporal change in the scene, or a movement of the object based on the travel distance and the movement direction of the dynamic body; a feeling-expressing-word extracting unit configured to extract, from among feeling-expressing words which express feelings stored in advance in association with the feeling information, a feeling-expressing word which corresponds to the feeling information calculated by the feeling information calculating unit; and a superimposing unit configured to superimpose the feeling-expressing word extracted by the feeling-expressing-word extracting unit on the current image, wherein the one or more processors cause at least one of the feeling information calculating unit to perform the detecting, the feeling-expressing-word extracting unit to perform the extracting, and the superimposing unit to perform the superimposing, wherein as the feeling-expressing-words corresponding to the number of faces, words that express a degree of excitement at a scene are used in proportion to the number of faces, as the feeling-expressing words corresponding to the tilt of the face, words that express an increased degree of intimacy are used corresponding to an increase in the tilts of two faces side-by-side in directions approaching each other, as the feeling-expressing-words corresponding to the number of dynamic bodies, words that express a degree of clamor at a scene are used in proportion to the number of dynamic bodies, as the feeling-expressing-words corresponding to the dynamic body transition information, words are used which express a repetitive movement corresponding to a periodicity that is recognized based on the dynamic body transition information, and as the feeling-expressing-words corresponding to the luminance change, words expressing a situation where lighting is turned on are used when luminance changes to a first value and words expressing a situation where lighting is turned off are used when luminance changes to a second value that is lower than the first value.