greku -rek- gismu

x1 is a frame/structure/skeleton/outline supporting/load-bearing/determining the form of x2.

See also korbi, stura, tsina, bongu.


In notes:

bongu
x1 is a/the bone/ivory [body-part], performing function x2 in body of x3; [metaphor: calcium].
korbi
x1 is an edge/margin/border/curb/boundary of x2 next-to/bordering-on x3.
stura
x1 is a structure/arrangement/organization of x2 [set/system/complexity].
tsina
x1 is a stage/platform/dais/[scaffold] at/in x2 supporting x3, made of material x4.
selca'o
x2=c1 is a window/portal/opening in wall/building/structure x1=c2.
uidje
x1 is a widget of user interface x2.