Explain the relevance of these words from Part 2 of Fahrenheit 451.
cowardly old fool
bradicate all firemen
the right to carry out action
the sieve and the sand
Cowardly old fool is what Faber calls himself to explain why he doesn't want to help Montag.
Denham's dentifrice is the product that is being advertised in the subway, making Montag unable to think.
Eradicate all firemen is, more or less, the goal of the rebellion Montag is considering.
The green bullet is the thing Faber gives Montag to put in his ear so Faber can help him deal with Beatty and other things.
Leisure is free time -- talking here about free time needed to read and think about books
Quality refers to the books -- need good quality books.
Right to carry out action refers to the need to have the right to act on what the books say. These last three things are what are needed to reform society.
Sieve and the sand is the metaphor for this chapter. It refers to the difficulty of filling a sieve up with sand -- that is what Montag feels like he is going to have to do.