stal

In a sentence

• Stal jest materiałem wykorzystywanym w budownictwie.

  Steel is a material used in construction.

  Here, 'stal' is a noun referring to the metal steel.

• Jego charakter stal był nieugięty w obliczu trudności.

  His steel character was unyielding in the face of difficulties.

  Here, 'stal' is used metaphorically as a noun to describe a quality of determination and strength.

• Robotnik stal przy maszynie przez osiem godzin.

  The worker stood by the machine for eight hours.

  Here, 'stal' is a verb form (past tense of 'stać') meaning 'stood,' which is a completely different meaning from the previous uses.