And,friction stir welding uses fewer workers at less cost than other methods.

VOA: special.2009.12.30

And we have not had the kinds of friction that's been seen in the past.

VOA: standard.2009.12.12

Of course,the biggest difference between the two bills, and one likely to cause the most friction in House-Senate negotiations, involves the so-called "public option" or competing insurance the government would offer.

VOA: standard.2009.12.25

The cattle are very thirsty at this point, the rains have not come yet, they need to get to the water points, and water points are dried up all along those regular migration routes, and that has been one of the causes of the friction."

VOA: standard.2010.03.23