Between him and General Blair there existed a natural rivalry.

There was a natural rivalry between Foraker and McKinley, as they were both young, able and eloquent men.

It is the so-called Yale model, however ironic given the natural rivalry between the two universities, which has dogged Harvard.

Austria, notwithstanding her natural rivalry to Russia, beheld the Polish revolution merely through the veil of legitimacy and refused her aid to rebels.