What combination of words is indelible?

Mill,

Stone mill,

Suffering,

Erase,

Torture,

Temper,

Hone,

Sharpen,

Thinking,

Grinding and folding,

Polishing,

Rotary grinding,

Water mill,

Grinding fan,

Jet mill,

Grinding mouth,

Annoyed,

Molar teeth,

Soft grinding,

Daley,