A smiling face; the expression of a smile appearing on someone's face.
彼女はいつも笑顔で客に接するので人気がある。
She is always polite to customers with a smile, so she's popular.
写真では笑顔を作るのが難しかった。
It was hard to force a smile for the photo.
笑顔は人の印象を良くする大切な要素だ。
A smile is an important factor that improves a person's impression.
疲れていても、少しの笑顔で場の雰囲気が和らぐ。
Even when tired, a small smile can soften the atmosphere.