squaretail vs scombroid

squaretail and scombroid both are nouns.

Word	Noun	Adjective	Verb	Adverb
squaretail	Yes	No	No	No
scombroid	Yes	No	No	No

As nouns, scombroid is a hypernym of squaretail; that is, scombroid is a word with a broader meaning than squaretail:

squaretail: sluggish square-tailed fish armored with tough bony scales; of deep warm waters
scombroid: 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

Other hypernyms of squaretail include scombroid fish.

squaretail (noun)	scombroid (noun)
sluggish square-tailed fish armored with tough bony scales; of deep warm waters	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