cross; cross shape
General term for a cross shape, including the symbol, an intersection, or a cruciform object.
Please draw a cross on the map.
A large cross stands on the roof of that church.
sign of the cross
Specifically the Christian gesture of making the sign of the cross.
He made the sign of the cross before praying.
The two roads cross each other at right angles.
We tied the branches into a cross shape to make a simple marker.
クロス is a casual loanword for an X- or cross-shaped mark (e.g. in games or sports), whereas 十字 is the standard word for a cross shape and carries religious associations as well.
十字架 refers specifically to the cross used in crucifixion or as a religious symbol, while 十字 just means a cross shape or crossing (e.g. an intersection).
Compound of 十 (じゅう, 'ten') and 字 (じ, 'character'), literally 'the character for ten', referring to the cross shape of the kanji 十.
green cross; safety symbol
double-crosspiece cross; tuberculosis prevention symbol
swastika; hooked cross
cross-head screw; Phillips screw