catholick
Catholick is an archaic or variant spelling of the word Catholic. It originates from Late Latin and Greek roots meaning universal, and it was commonly used in Early Modern English to refer to the Catholic Church or to something related to Catholicism.
Historically, catholick appeared as both an adjective and a noun in older English texts. It could denote
In contemporary English, the standard forms are Catholic (capitalized when referring to the Church or its members)
There is no modern denomination known as the "Catholick" church. Today’s discussions use terms such as Roman