fibrinogen vs clotting factor

fibrinogen and clotting factor both are nouns.

Word	Noun	Adjective	Verb	Adverb
fibrinogen	Yes	No	No	No
clotting factor	Yes	No	No	No

As nouns, clotting factor is a hypernym of fibrinogen; that is, clotting factor is a word with a broader meaning than fibrinogen:

fibrinogen: a protein present in blood plasma; converts to fibrin when blood clots
clotting factor: any of the factors in the blood whose actions are essential for blood coagulation

Other hypernyms of fibrinogen include coagulation factor.

fibrinogen (noun)	clotting factor (noun)
a protein present in blood plasma; converts to fibrin when blood clots	any of the factors in the blood whose actions are essential for blood coagulation