jellyfish

As nouns the difference between jellyfish and crab

is that jellyfish is an almost transparent aquatic being; any one of the acalephs, especially one of the larger species, having a jellylike appearance while crab is a crustacean of the infraorder Brachyura, having five pairs of legs, the foremost of which are in the form of claws, and a carapace.

As a verb crab is

to fish for crabs.

As nouns the difference between jellyfish and whalefish

is that jellyfish is (zoology) an almost transparent aquatic being; any one of the acalephs, especially one of the larger species, having a jellylike appearance while whalefish is a whale.

As nouns the difference between ctenophore and jellyfish

is that ctenophore is any of various marine animals of the phylum ctenophora, having lucent, mucilaginous bodies bearing eight rows of comblike cilia used for swimming while jellyfish is (zoology) an almost transparent aquatic being; any one of the acalephs, especially one of the larger species, having a jellylike appearance.

As nouns the difference between jellyfish and trout

is that jellyfish is an almost transparent aquatic being; any one of the acalephs, especially one of the larger species, having a jellylike appearance while trout is any of several species of fish in Salmonidae, closely related to salmon, and distinguished by spawning more than once.

As a verb trout is

to (figuratively) slap someone with a slimy, stinky, wet trout; to admonish jocularly.

As a proper noun Trout is

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As nouns the difference between narwhal and jellyfish

is that narwhal is , an arctic cetacean that grows to about 20 feet (6 meters) long, the male having a single horn-like tusk, a twisted, pointed canine tooth that projects forward while jellyfish is (zoology) an almost transparent aquatic being; any one of the acalephs, especially one of the larger species, having a jellylike appearance.

As nouns the difference between sponges and jellyfish

is that sponges is while jellyfish is (zoology) an almost transparent aquatic being; any one of the acalephs, especially one of the larger species, having a jellylike appearance.

As a verb sponges

is (sponge).

As nouns the difference between siphonophore and jellyfish

is that siphonophore is any of various transparent marine hydrozoans, of the order Siphonophora, that float or swim as colonies of polyps while jellyfish is an almost transparent aquatic being; any one of the acalephs, especially one of the larger species, having a jellylike appearance.