Perhaps this is a common phenomenon, found on many worlds.

A common phenomenon among students where peer pressure is strong.

It is a common phenomenon, accounting for 5-10% of all cancers.

Neither is a very common phenomena, however, so they will only be dealt with briefly.

Could it be that planets are a common phenomenon of stars, large and small?

Whale hunting has been a common phenomenon for a long time.

This is an extremely common phenomenon but the exact reason for it isn't known.

The things in the valley are between these two poles of common phenomena.

Gene transfer between organisms is, as we know, a common phenomenon in nature.

So that is still a common phenomenon and I think we have to work on that.