coagulum vs embolus

coagulum and embolus both are nouns.

Word	Noun	Adjective	Verb	Adverb
coagulum	Yes	No	No	No
embolus	Yes	No	No	No

As nouns, embolus is a hyponym of coagulum; that is, embolus is a word with a more specific, narrower meaning than coagulum:

coagulum: a lump of material formed from the content of a liquid
embolus: an abnormal particle (e.g. an air bubble or part of a clot) circulating in the blood

Other hyponyms of coagulum include thrombus.

coagulum (noun)	embolus (noun)
a lump of material formed from the content of a liquid	an abnormal particle (e.g. an air bubble or part of a clot) circulating in the blood