Do you know that protrusions on the sole of a shoe is called cleat?
No i dont, wow, so why is it called a cleat?
They are called cleat because  they  provide additional traction on a soft or slippery surface.
wow, good to know, do you prefer flat shoes or hilly shoes?
Flat works for me. In the USA,  we use synecdochically to  refer to shoes featuring such protrusions 
wow, so why do majority of females wear hilly shoes?
I wish i know the answer, hahaha, meanwhile, in the UK  studs' can be used to refer to 'football boots' or 'rugby boots