There are lots of forms of figurative language in Fahrenheit 451. Here are some examples.
Bradbury uses a metaphor to describe Montag's fire hose. He compares it to a "great python," for example, which not only gives the reader an idea of its size and shape but also of its power.
There is an example of personification when Montag comes home to find that Mildred has taken an overdose. In this line, Bradbury says that the "sky" above the house "screamed." This figure of speech reinforces Montag's sense of anguish as he realizes what Mildred has done.
There is an example of alliteration in the advertisement which Montag hears while he is in the underground train:
Denham's Dandy Dental Detergent, Denham's Dentifrice Dentifrice Dentifrice, one two, one two three.
By repeating the D sound, Bradbury creates a sense of rhythm in the text while also emphasizing the love of mindless entertainment in this society. Looking deeper, then, Montag's efforts to get this song out of his head are symbolic of his wider struggles to overcome censorship.