In order to realize a creative design, it is thought to be important to unify the knowledge from different knowledge areas flexibly. The computer environment that supports designers in an integrated way has been developed. The extended method of the knowledge representation forms for increasing the usefulness of the hypothetical knowledge from the knowledge tagged with vocabulary information was proposed. However, the current method isn't always capable of obtaining the useful knowledge, since it doesn't consider the context. In order to acquire the hypothetical knowledge adapted to the context efficiently, the tagging technique based on the attribute of a vocabulary and the reasoning using it are effective. In this paper, the authors propose knowledge representation forms for tagging physical quantity based on vocabulary describing knowledge, and verify the usefulness of the proposed method.