priest
priːst
noun
1.
an ordained minister of the Catholic, Orthodox, or Anglican Church, authorized to perform certain rites and administer certain sacraments.
"the priest celebrated mass at a small altar off the north transept"
synonyms: clergyman, clergywoman, minister (of religion), cleric, ecclesiastic, pastor, parson, churchman, churchwoman, man/woman of the cloth, man/woman of God, father; More
2.
a mallet used to kill fish caught when angling.
Exists.
witch
wɪtʃ
noun
1.
a woman thought to have evil magic powers, popularly depicted as wearing a black cloak and pointed hat, and flying on a broomstick.
synonyms: sorceress, enchantress, occultist, necromancer, Wiccan; More
2.
informal
an ugly or unpleasant old woman.
synonyms: hag, crone, harpy, harridan, termagant, she-devil; More
Does not exist.
You can claim to be using one of the definitions further down the list, but only if you're just as happy to assume that people who say "priest" mean "mallet" as you are to assume that people who say "witch" mean "someone who claims that wyttchecraffte is their religion".