余暇 and 娯楽: Time for Reading and Reading for Enjoyment
Compare spare time used for gardening or reading with a father's enjoyment of books and research into past amusements. Distinguish available time from an enjoyed activity.
Time used for gardening and reading
余暇 (よか) means leisure or free time. 「余暇には庭で野菜を育てています。」 — “I grow vegetables in the garden during my free time.” The example describes growing vegetables in free time, without stating an occupation, income, or exact frequency.
「旅行先でも余暇を利用して本を読みました。」 — “I used my spare time during the trip to read.” Reading took place during spare time on a trip. The focus includes the time used for the activity, rather than reading alone.
Reading enjoyed and past amusements researched
娯楽 (ごらく) means entertainment or amusement. 「読書は父にとって一番の娯楽です。」 — “Reading is my father's greatest source of entertainment.” The sentence identifies reading as the father's greatest source of entertainment, without assigning that preference to every reader.
「昔の町で親しまれた娯楽を資料で調べました。」 — “We researched the pastimes once enjoyed in the old village.” The researched objects are past amusements. No individual pastime is named in the sentence, so its scope does not supply a historical list.
Different information around the same activity
Reading on the trip is connected to using 余暇. Reading in the father's example is connected to 一番の娯楽, the value of an enjoyed activity. The shared subject of books does not erase that difference.
Keep leisure time distinct from the activity enjoyed. Neither reading nor gardening is identified as a job or compulsory rest, and the research sentence does not establish unnamed historical details.
Do reading during a trip's 余暇 and reading as the father's 一番の娯楽 emphasize the same information?
Show the answer and why
The first emphasizes the spare time used; the second emphasizes reading's value as his greatest entertainment. They share an activity while keeping different focuses, without adding a job or an obligation to rest.

