A Witch is a practitioner of a nature-based belief system or religion. Not all Witches follow the same belief system. Some practice what is called the "old religion" which has its roots in pagan pre-monotheistic folk ways and beliefs and usually follows the seasonal cycles. These belief systems or "traditions" of Witches are often based upon the particular culture from whence they originated. Many Witches believe in a polytheistic deity structure (usually based upon the local gods and goddesses of the area of origin), but some simply practice magick (sometimes spelled with a 'k' to differentiate it from stage magic). Witches may practice alone as 'solitaries" or in covens. There are also family groups or traditions which trace their practices and beliefs within the same close group throughout several generations.