Witchcraft is the practice of magic.
Wicca is a religion.
Not all witches are Wiccan, and not all Wiccans are Witches.
You can be one or both.
Some Wiccan traditions use more witchcraft than others. There are differences in all the traditions and there is not a standard that is accepted and used by all. Always ask what they actually practice, before you make assumptions. I am an Eclectic Wiccan. I practice very little of the actual witchcraft, and more focused prayers with intent and goals personally. It is why you find more chants posted by me, because they are what I use in a prayer form. Everyone is entitled to do things their own way.