American olive vs Osmanthus americanus

American olive and Osmanthus americanus both are nouns.

Word	Noun	Adjective	Verb	Adverb
American olive	Yes	No	No	No
Osmanthus americanus	Yes	No	No	No

As nouns, American olive and Osmanthus americanus are synonyms defined as:

American olive and Osmanthus americanus: small tree of southern United States having panicles of dull white flowers followed by dark purple fruits

Other synonyms of American olive include devilwood.

American olive (noun)	Osmanthus americanus (noun)
small tree of southern United States having panicles of dull white flowers followed by dark purple fruits	small tree of southern United States having panicles of dull white flowers followed by dark purple fruits