卵

In a sentence

• 朝ごはんに卵を食べます。

  I eat eggs for breakfast.

  Here, 卵 refers to eggs as a food ingredient, commonly used for cooking and eating.

• 彼はまだ科学者の卵だ。

  He is still a budding scientist.

  In this sentence, 卵 is metaphorically used to describe someone as being in the 'budding' stage of developing a skill or profession.

• 鳥の巣に卵が三つあります。

  There are three eggs in the bird's nest.

  Here, 卵 refers to literal bird eggs found in a nest, indicating its biological and natural context.