useless trivia: What Word Means: A Duet, A Musical Piece For Two?

Questions

it takes about a half a gallon of water to cook---------- , and about a gallon to clean the pot?

it takes about a half a gallon of water to cook macaroni, and about a ---------- to clean the pot?

it's impossible to get water out of a ---------- tyre?

---------- pounds of space dust and other space debris fall on the earth everyday?

2,000 pounds of ---------- and other space debris fall on the earth everyday?