collar; lapel; neckband; nape of the neck; scruff of the neck
(around the) neck; nape; collar (at the front)
neckline (of dress, etc.)
unbuttoning a collar; opening up (one's heart); open-necked shirt
usu. the drop between collar and bottom hem on kimono, yukata, etc.
hairline at nape of neck; nape of neck
collar points; tip of a collar
neckline (of dress, etc.)
collar core (stiff fabric, etc. inside a collar)