Tsu-ku-mo-ga-mi. [She pronounces it again, emphasizing the "tsu" sound's difference] Tsukumogami are the items imbued with the feelings of humanity to such a point that they are ensouled with their own will. Tsugumomo are those developed by a long time of use and care, and oft become powerful protective spirits of their masters, while Amasogi are those imbued suddenly with strong emotion, often negative, and are like beasts or mindless demons.

I am of the former, and those that these "Weapons" are quite similar to.