Cмысл декоратора property?

class Person:
    first_name = 'First'
    last_name = 'Last'

    @property
    def full_name_1(self):
        return ' '.join([self.first_name, self.last_name])

    def full_name_2(self):
        return ' '.join([self.first_name, self.last_name])