thresher shark vs fox shark

thresher shark and fox shark both are nouns.

Word	Noun	Adjective	Verb	Adverb
thresher shark	Yes	No	No	No
fox shark	Yes	No	No	No

As nouns, thresher shark and fox shark are synonyms defined as:

thresher shark and fox shark: 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 Alopius vulpinus, thrasher, thresher.

thresher shark (noun)	fox shark (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