Here's a breakdown:

* Hyphae: These are long, thread-like filaments that make up the fungal body. They are responsible for absorbing nutrients from the environment.

* Mycelium: This is a network of interwoven hyphae. It forms the main body of the fungus and can be extensive, spreading through soil, wood, or other substrates.

So, hyphae and mycelium are the building blocks of the fungal kingdom.