CROSSBAR: The element from a Northern F-style throwing knife that extends horizontally from the stem. The top branch is above and the stem, butt, and grip are below.
CROWN: The upper part of a southern-style throwing knife that typically extends above the stem. The wing is below and the spur is further below.
TOP BRANCH: The upper part of a northern F-type throowing knife that extends above the crossbar.
WING: The appendage extending left of the stem in a Southern-style throwing knife. The crown is above/right and the spur is below. Reverse for left-handed throwing knives.