In other cruci- words

• crucial, adjective. Involving an extremely important decision or result; decisive; critical.
• crucible, noun. A severe, searching test or trial; a container of metal or refractory material employed for heating substances to high temperatures.
• crucifer, noun. A person who carries a cross, as in ecclesiastical processions; (Botany) a cruciferous plant.
• cruciferous, adjective. Bearing a cross; (Botany) belonging to the family Cruciferae, the mustard family of plants.
• crucifix, noun. A cross with the figure of Jesus crucified upon it; any cross.
• crucifixion, noun. The act of crucifying, or the state of being crucified.
• cruciform, adjective. Being in the shape of a cross; cross-shaped.
• crucify, verb. To put to death by nailing or binding the hands and feet to a cross; to treat with gross injustice; persecute; torment; torture.
• cruciverbalist, noun. A designer or aficionado of crossword puzzles.