Xyphophorus helleri vs swordtail

Xyphophorus helleri and swordtail both are nouns.

Word	Noun	Adjective	Verb	Adverb
Xyphophorus helleri	Yes	No	No	No
swordtail	Yes	No	No	No

As nouns, Xyphophorus helleri and swordtail are synonyms defined as:

Xyphophorus helleri and swordtail: freshwater fish of Central America having a long swordlike tail; popular aquarium fish

Other synonyms of Xyphophorus helleri include helleri, topminnow.

Xyphophorus helleri (noun)	swordtail (noun)
freshwater fish of Central America having a long swordlike tail; popular aquarium fish	freshwater fish of Central America having a long swordlike tail; popular aquarium fish