fall-out common ground

Over the years, the Left has found common ground with the Jamat on issues like anti- Americanism. But after Nandigram, many Left leaders fear that a fall-out with the body will badly hurt its secular credentials.

Please explain the highlighted words.

Quote:

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Originally Posted by user_gary

Over the years, the Left has found common ground with the Jamat on issues like anti- Americanism. But after Nandigram, many Left leaders fear that a fall-out with the body will badly hurt its secular credentials.

Please explain the highlighted words.

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Common ground : Both Left wing and Right wing political parties agree on something. Normally they will have opposed views.

a fall-out : if you and your girlfriend have a row, then you have fallen out. You disagree with one another.