Following up on my earlier post, these "compact" and "relaxed" geometries are not confined to road bikes, particularly for "relaxed" geometries. For seat tube & heat tube angles and stay lengths are also varied significantly on hybrid bikes. I suspect on mountain bikes too, but I as don't pay any attention to mountain bikes, I can't say for sure.

For example, many "standard" hybrids have seat tube angles of 73-74 degrees and nearly all are compact / mountain bike geometries. By moving the crank forward a bit, this can be varied. There are relaxed comfort hybrids like the Specialized Crossroads and Expedition, and the Trek Navigator which have seat tube angles of around 68-69 degrees. You sit more back into the saddle and your rear is closer to the ground.

Then what are commonly referred to as "crank forward" bikes take this another step. They move the bottom bracket / crank even more forward and the seat even further back, to around 64-65 degrees (a couple may go even further). Then you are resting completely on the saddle, it can be difficult to stand and pedal, and you can usually put your feet flat on the ground while sitting in the saddle.

The RANS crank forwards illustrate some of the more aggressive crank forward / relaxed geometries.
http://www.ransbikes.com/

Some super cruiser designs take this even further. Until you eventually cross the line into being classified as a recumbent.

In general you will not hear a hybrid described as a compact geometry. But some of them will use the term "relaxed" to describe particular designs.