1. A feeling-expressing-word processing device comprising: one or more processors; a feeling information calculating unit configured to detect a dynamic body which includes regions of significant movement appearing in a current photographed image, to 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 to calculate feeling information which includes one or more of a number of dynamic bodies, transition information of the dynamic body, and a change in luminance of the current photographed image as the feeling information which indicates a temporal change in a scene shown in the current photographed image or a movement of an object present in the scene based on the travel distance and the movement direction of the dynamic body; and a feeling-expressing-word extracting unit configured to extract, from among feeling-expressing words which express feelings and are 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, wherein the one or more processors cause at least one of the feeling information calculating unit to perform the detecting, and the feeling-expressing-word extracting unit to perform the extracting, when the feeling information includes the number of dynamic bodies, the feeling-expressing-word extracting unit extracts the feeling-expressing-word which expresses a degree of clamor so that the greater the number of dynamic bodies, the more dramatically the degree of a clamor is expressed, when the feeling information includes the transition information of the dynamic body and a periodicity is recognized in the transition of the dynamic body based on the transition information of the dynamic body, the feeling-expressing-word extracting unit extracts the feeling-expressing-word which expresses a repetitive movement corresponding to the periodicity, and when the feeling information includes the change in luminance of the current photographed image, the feeling-expressing-word extracting unit extracts the feeling-expressing-word which expresses a situation where lighting is turned on when the luminance changes to a first value and extracts the feeling-expressing-word which expresses a situation where lighting is turned off when the luminance changes to a second value lower than the first value.