foetoprotein vs AFP

foetoprotein and AFP both are nouns.

Word	Noun	Adjective	Verb	Adverb
foetoprotein	Yes	No	No	No
AFP	Yes	No	No	No

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

foetoprotein: any of several antigens that occur naturally in the fetus and sometimes in adults with cancer
AFP: an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)

Other hyponyms of foetoprotein include alpha fetoprotein, alpha foetoprotein.

foetoprotein (noun)	AFP (noun)
any of several antigens that occur naturally in the fetus and sometimes in adults with cancer	an abnormally large amount of this fetoprotein in the fetus can signal an abnormality of the neural tube (as spina bifida or anencephaly)