What is the common name for the phylum Porifera?

Poriferans are pore-bearing animals. These pores are known as 'Ostia'. They are commonly called sponges because of their spongy appearance.

Jellyfish is the common name for members of Cnidaria.

Insects are members of the class Insecta in the phylum Arthropoda.

Worms are generally used for the members of Phylum Platyhelminthes, Nematoda, and Annelida.