yellowfin tuna vs Thunnus albacares

yellowfin tuna and Thunnus albacares both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellowfin tuna	Yes	No	No	No
Thunnus albacares	Yes	No	No	No

As nouns, yellowfin tuna and Thunnus albacares are synonyms defined as:

yellowfin tuna and Thunnus albacares: may reach 400 pounds; worldwide in tropics

Other synonyms of yellowfin tuna include yellowfin.

yellowfin tuna (noun)	Thunnus albacares (noun)
may reach 400 pounds; worldwide in tropics	may reach 400 pounds; worldwide in tropics