Keep a Word, Delete a Word

prime rib

spare rib

hard spare

(In bowling, a frame in which the bowler knocks down zero pins on the first roll - usually due to a gutter ball - and ten on the second roll)

blow hard

blow job

odd job

Odd Couple

Entangled Couple

matching couple

matching set

matching socks

Sweat socks

cold sweat

common cold

ice cold

stone cold

stone riot

Quiet Riot

Quiet, Please!

quiet time