naphthoquinone vs vitamin K

naphthoquinone and vitamin K both are nouns.

Word	Noun	Adjective	Verb	Adverb
naphthoquinone	Yes	No	No	No
vitamin K	Yes	No	No	No

As nouns, naphthoquinone and vitamin K are synonyms defined as:

naphthoquinone and vitamin K: a fat-soluble vitamin that helps in the clotting of blood

Other synonyms of naphthoquinone include antihemorrhagic factor.

naphthoquinone (noun)	vitamin K (noun)
a fat-soluble vitamin that helps in the clotting of blood	a fat-soluble vitamin that helps in the clotting of blood