They bickered like a married couple.

They fight like a married couple.

They argue like a married couple.

They were bickering like a married couple.

They bicker like a married couple.

They were fighting like a married couple.

I always make a wrong turn at Albuquerque.

She took a risk and started her own business.

He took a gamble and invested all his savings in the stock market.

He takes a risk every time he tries something new.