ostracod vs seed shrimp

ostracod and seed shrimp both are nouns.

Word	Noun	Adjective	Verb	Adverb
ostracod	Yes	No	No	No
seed shrimp	Yes	No	No	No

As nouns, ostracod and seed shrimp are synonyms defined as:

ostracod and seed shrimp: tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell

Other synonyms of ostracod include mussel shrimp.

ostracod (noun)	seed shrimp (noun)
tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell	tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell