Witch means a person who practices witchcraft; specifically: when used as a noun. A good way to remember the difference is The witch had an itch. Out of the two words, 'which' is the most common. It appears about 690 times more frequently than 'witch'.
Which vs witch examples?
Her friend has two dogs and they look very similar, so Amelia cannot tell which is which and says "happy birthday" to the wrong one. Her friend gets angry and calls her a witch and tells her to leave, so Amelia drives back to her house, which is decorated with witches and ghosts for Halloween, which is in a few days.
Which is correct wich or which?
Which is a pronoun and an adjective. It means "what one, whichever, any one." Sometimes it's used in place of "that." Wich is an obsolete noun that can mean either "a bundle of thread" or "a village or settlement."