thresher shark vs Alopius vulpinus

thresher shark and Alopius vulpinus both are nouns.

Word	Noun	Adjective	Verb	Adverb
thresher shark	Yes	No	No	No
Alopius vulpinus	Yes	No	No	No

As nouns, thresher shark and Alopius vulpinus are synonyms defined as:

thresher shark and Alopius vulpinus: large pelagic shark of warm seas with a whiplike tail used to round up small fish on which to feed

Other synonyms of thresher shark include fox shark, thrasher, thresher.

thresher shark (noun)	Alopius vulpinus (noun)
large pelagic shark of warm seas with a whiplike tail used to round up small fish on which to feed	large pelagic shark of warm seas with a whiplike tail used to round up small fish on which to feed