calcium ion vs clotting factor

calcium ion and clotting factor both are nouns.

Word	Noun	Adjective	Verb	Adverb
calcium ion	Yes	No	No	No
clotting factor	Yes	No	No	No

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

calcium ion: ion of calcium; a factor in the clotting of blood
clotting factor: any of the factors in the blood whose actions are essential for blood coagulation

Other hypernyms of calcium ion include atomic number 20, Ca, calcium, coagulation factor.

calcium ion (noun)	clotting factor (noun)
ion of calcium; a factor in the clotting of blood	any of the factors in the blood whose actions are essential for blood coagulation