Bream and Sunfish

Bream noun - Any of various usually edible freshwater percoid fishes having compressed bodies and shiny scales; especially (but not exclusively) of the genus Lepomis.

Sunfish and bream are semantically related. In some cases you can use "Sunfish" instead a noun "Bream".

Sunfish noun - Small carnivorous freshwater percoid fishes of North America usually having a laterally compressed body and metallic luster: crappies; black bass; bluegills; pumpkinseed.

Bream and sunfish are semantically related. Sometimes you can replace term "Bream" with "Sunfish", this nouns are similar.