thromboplastin vs factor III

thromboplastin and factor III both are nouns.

Word	Noun	Adjective	Verb	Adverb
thromboplastin	Yes	No	No	No
factor III	Yes	No	No	No

As nouns, thromboplastin and factor III are synonyms defined as:

thromboplastin and factor III: an enzyme liberated from blood platelets that converts prothrombin into thrombin as blood starts to clot

Other synonyms of thromboplastin include thrombokinase.

thromboplastin (noun)	factor III (noun)
an enzyme liberated from blood platelets that converts prothrombin into thrombin as blood starts to clot	an enzyme liberated from blood platelets that converts prothrombin into thrombin as blood starts to clot