canti gismu

x₁ is a/the gut(s)/entrails/intestines/viscera/innards/digestive system [body-part] of x₂.

Metaphor: process hub. See also betfu.

jbovlaste

In notes:

betfu: x₁ is a/the abdomen/belly/lower trunk [body-part] of x₂; [metaphor: midsection].
tisycanti: t₁=c₁ is a sausage filled with t₂.