vaccine vs vaccinum

vaccine and vaccinum both are nouns.

Word	Noun	Adjective	Verb	Adverb
vaccine	Yes	No	No	No
vaccinum	Yes	No	No	No

As nouns, vaccine and vaccinum are synonyms defined as:

vaccine and vaccinum: immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies

vaccine (noun)	vaccinum (noun)
immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies	immunogen consisting of a suspension of weakened or dead pathogenic cells injected in order to stimulate the production of antibodies