The activity of reading books or literature; often used for reading as a hobby or study (also used as 'to read' with 'suru').
休日は読書をしてゆっくり過ごすのが好きだ。
On holidays I like to spend time relaxing by reading.
読書は語彙力を高めるのに有効だ。
Reading is effective for improving vocabulary.
彼は毎晩寝る前に読書する習慣がある。
He has a habit of reading before going to bed every night.