式 ritual

SHE KILLED the chicken at the voodoo ritual.

On the top right, you see a new shape: two lines and a dot

I guess you could think of some cavemen having a ceremony where they make fire (the dot) by rubbing the two sticks (lines) together) . . . and then you could say .. .

At the ritual, the head caveman ceremoniously crafted fire !

the marriage ceremony ★★★☆☆
結婚 (to marry) + 式 (ritual) = 結婚式 (the marriage ceremony)

funeral ★★☆☆☆
葬 (mourn) + 式 (ritual) = 葬式 (funeral)

ceremony ☆☆☆☆☆
儀 (politeness) + 式 (ritual) = 儀式 (ceremony)

Usually refers to a religious ceremony. Or sometimes a secular one: a swearing-in of a new president, or even someone with O.C.D. who has to clap their hands 4 times whenever they touch a doorknob!