Meanings of be a fluidity in English

There was a fluidity, a gracefulness in my motion.

There was a fluidity to it.

But there was a fluidity about Hibs' movement, with players changing positions at will, which often wrong-footed their rather pedestrian opponents.

But there 's a fluidity of movement, and sometimes a kind of determined fire that, however carefully moulded the style, can make the heart race.