пальцы

In a sentence

• Я играю на гитаре, используя пальцы.

  I play the guitar, using my fingers.

  Here, 'пальцы' is used in its literal sense, referring to the fingers of a person.

• Ты можешь посчитать количество яблок на пальцах одной руки.

  You can count the number of apples on the fingers of one hand.

  In this case, 'пальцы' metaphorically indicates a limited and easily countable amount.

• После долгого дня у меня болят пальцы.

  After a long day, my fingers ache.

  Here, 'пальцы' again refers to fingers but is used in the context of expressing a physical condition.