Peat bog and Quag

Peat bog noun - Wet spongy ground of decomposing vegetation; has poorer drainage than a swamp; soil is unfit for cultivation but can be cut and dried and used for fuel.

Quag and peat bog are semantically related in swamp topic. In some cases you can use "Quag" instead a noun phrase "Peat bog", when it comes to topics like wet land covered with vegetation.

Quag noun - A soft wet area of low-lying land that sinks underfoot.

Peat bog and quag are semantically related in swamp topic. You can use "Peat bog" instead a noun "Quag".