sponges

As nouns the difference between protozoa and sponges

is that protozoa is while sponges is .

As a verb sponges is

(sponge).

As nouns the difference between sponges and cnidarian

is that sponges is while cnidarian is any of various invertebrate animals, such as jellyfish, hydras, sea anemones, corals and formerly sponges and ctenophores that belong to the phylum cnidaria .

As a verb sponges

is (sponge).