Yeast
any single-celled fungus
Chitin
a structural carbohydrate found in the cell walls of fungi (and the exoskeletons of insects, along with other structures in other species)
Mycelium
the body type found in multicellular fungi is comprised of a network of branching filaments called hyphae
Hyphae
the filaments that make up a fungal mycelium
Lignin
a complex, exceptionally stiff and strong macromolecule that is key component of wood