It can refer to any cross used for crucifixion, but in the context of Christianity, a crucifix is understood to have a figure of Christ. Example usage on a Cat

It can refer to any cross used for crucifixion, but in the context of Christianity, a crucifix is understood to have a figure of Christ. Example usage on a Catholic site: https://www.catholic.com/qa/wrong-to-wear-a-bare-cross https://www.catholic.com/qa/wrong-to-wear-a-bare-cross https://en.wikisource.org/wiki/Catholic_Encyclopedia_(1913)/Cross_and_Crucifix https://en.wikisource.org/wiki/Catholic_Encyclopedia_(1913)/...