What are two story elements in the book frindle

I think the theme of this book is Friendship, Power and Language.

the problem in the story was 
a fifth grader who dislikes his teacher. He invents a new word that all of the children love but the teacher andschool authorities dislike. His word eventually gets included in the dictionary, but theinitial conflict it causes is the book's central problem.

1one sharp difficulty presented itself. in the intervening twenty-five years my name had become reasonably well known.2 this being so, my trip demanded that i leave my name and my identity at home.3 i had to go alone and i had to be self-contained, a kind of casual turtle carrying his house on his back.4 with all this in mind i wrote to the head office of a great corporation which manufactures trucks.

Idon’t understand are those songs? ?