Homologous structure are body parts that are similar to each other. They are almost the same, but not quite. That's how the meanings are similar.
The method to reproduce a plant by burying a portion of its stem is called layering.
Hope this helps!
They spend more time in their den, and they also put on "layers of fat" to have fat reserves to fall back on since they'll be less food in the winter :)
They are the same because they have lower divisons