What is the difference between wife & saali?

What is the difference between wife & saali?

Saali is Beauty, Wife is duty,

Saali is passion, Wife is tension,

Saali is patakha, Wife is jhatka,

Saali is cool, Wife is fool.
Saali is Tuty-Fruity, Wife is Qismat Futi,
Saali is Fresh Cake, Wife is Earth Quake.