고기

In a sentence

• 저는 고기를 먹는 걸 좋아해요.

  I like eating meat.

  Here, '고기' refers to 'meat' as a general noun representing consumable meat.

• 이 고기는 정말 부드럽고 맛있어요.

  This meat is really tender and delicious.

  In this sentence, '고기' specifies a particular piece of meat that is being described.

• 고기가 물에서 헤엄치고 있어요.

  The fish is swimming in the water.

  Here, '고기' is used in a traditional and less common sense to refer to a living fish, emphasizing its origin.