Equilibrium or balance; the distribution or harmony among elements. Often used in phrases like 'balance of X' or 'to keep/achieve balance.'
健康のためには食事と運動のバランスが大切だ。
For health, the balance between diet and exercise is important.
その料理は味のバランスが良くて人気がある。
That dish is popular because its flavors are well balanced.
自転車に乗るときはバランスを取るのが難しいと感じた。
I found it difficult to keep my balance when riding a bicycle.