Writing
Sentence, Composition
noun
A writing chapter is just another name for a piece of writing, a.k.a. a composition. Even if it's only a single sentence! 文章 covers just about every type of writing there is.
Although 文章 is pretty versatile, it most often refers to a complete piece of longer writing, like an essay, novel, short story, or poem. But even something super short like a tanka or haiku can be called 文章, as long as it's a complete work by itself.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
弟には文章を読むエクササイズが必要です。
My brother needs an exercise to read sentences.
コウイチは文章が本当に上手だ。
Koichi is such a good writer.
村上春樹の文章って少し気取った感じがするんだよね。
Haruki Murakami's writing style feels a bit pompous.