jerusalem

In a sentence

• Jerusalem és una ciutat molt important per a diverses religions.

  Jerusalem is a very important city for various religions.

  Here, 'Jerusalem' is used as a proper noun referring to the historical and religious city.

• El meu amic va viatjar a Jerusalem el mes passat.

  My friend traveled to Jerusalem last month.

  In this sentence, 'Jerusalem' is again a proper noun denoting the city, used as an object of the verb 'travel'.

• He llegit un llibre sobre la història de Jerusalem.

  I read a book about the history of Jerusalem.

  'Jerusalem' here signifies the subject of historical discussion in the book.