Having a surplus or margin — spare time, money, space, or leeway that allows flexibility.
飛行機に乗るときは、予定より早めに出て30分の余裕を持つ。
When taking a plane, I leave earlier than planned and allow a 30-minute margin.
今月は出費が多くてお金の余裕がない。
There were many expenses this month and I don't have any financial leeway.
部屋に家具を置く余裕がほとんどない。
There's hardly any space in the room for furniture.
Composure or calmness — a relaxed, unhurried attitude or emotional ease.
彼はいつも余裕のある態度で人に接する。
He always deals with people with a composed manner.
面接で余裕を見せるために、深呼吸をして落ち着いた。
She took a deep breath to appear composed during the interview.
時間に余裕があると、気持ちにも余裕が生まれる。
When you have time to spare, you also gain mental composure.