Answer 1

In families of polices, you've "serif", "sans-serif" and "monospace". In polices, you've Arial ("sans-serif"), Courier New ("monospace"), Verdana ("serif") for example.

Answer 2

You can use it like this :

#text {
font-family: Arial; /* adding a police to the id Text */
}

Answer 3

#text {
font-family: monospace; /* adding a monospace family to the id Text */
}

Answer 4

But maybe this last example isn't good, I've a better comprehension of polices than families AND I'm not English... :(

Answer 5

You want character polices ?