A small retail store (often open 24 hours) where you can easily buy food, daily necessities, magazines, and similar items; used for everyday quick purchases.
駅前に新しいコンビニエンスストアができた。
A new convenience store opened in front of the station.
夜遅くてもコンビニエンスストアなら食べ物や日用品が買える。
Even late at night, you can buy food and daily goods at a convenience store.
急な雨で傘が必要になり、コンビニエンスストアで傘を買った。
It started raining suddenly so I needed an umbrella and bought one at a convenience store.