porgy
Synonym discussion
Sense: noun/1
Sea bream is the safest broad comparison word for porgy, because both can name sea fish often sold whole for eating. Porgy is less common in everyday English and is more likely to appear in fishing talk, fish markets, or restaurant menus. Bream is wider and less exact, since it can also mean several freshwater fish, so it is not always a full substitute. Scup is narrower: it usually refers to one North American kind of porgy rather than the whole group. If you want a general label, sea bream is often safer. If a menu or fish seller says porgy, keep the more specific word: buy a whole porgy, or grill porgy with lemon.
Etymology
Probably formed in English as a changed form of pogy, an older fish name. The newer form porgy became a label for this kind of sea fish and for its meat as food.