sfofa -sfo- gismu

x1 is a sofa/couch (noun).

See also nilce.

In notes:

birstizu
s1 is an armchair.
nilce
x1 [furniture items] furnishes x2 [location] serving purpose/function x3.
nusfo
x1 tries hard, works hard, puts an effort into doing x2, to achieve goal x3.