Swordfish and Scombroid fish

Swordfish noun - Large toothless marine food fish with a long swordlike upper jaw; not completely cold-blooded i.e. they are able to warm their brains and eyes: worldwide in warm waters but feed on cold ocean floor coming to surface at night.

Scombroid fish and swordfish are semantically related. In some cases you can use "Scombroid fish" instead a noun "Swordfish".

Scombroid fish noun - Important marine food and game fishes found in all tropical and temperate seas; some are at least partially endothermic and can thrive in colder waters.

Swordfish and scombroid fish are semantically related. Sometimes you can replace term "Swordfish" with "Scombroid fish", this terms are similar.