Montag gets on the subway and starts reading the Bible, because he wants to memorize some lines from it. However, he is being constantly distracted and interrupted by an advertisement for Denham's Dentrifice toothpaste, as its jingle is played over and over again on the subway. He gets really mad because of it and starts screaming and yelling, before he leaves at the next stop.
There are multiple types of vocabulary games.
Ophelia's. Because the suspicions of her taking her own life, and that is a mortal sin in the church.