The term 'cap with a tassel' refers to two different types of headwear. The first is a TAM, which is a traditional Jewish head covering for men. It is usually made of black velvet or silk and has a circular shape with a tassel attached to the top. The second is a TARBOOSH, which is a type of fez worn in North Africa and the Middle East. It is usually made of felt and has a flat top with a tassel attached to the front. Both of these headwear items are traditionally worn as part of religious or cultural ceremonies.