peppermint vs Eucalyptus amygdalina

peppermint and Eucalyptus amygdalina both are nouns.

Word	Noun	Adjective	Verb	Adverb
peppermint	Yes	No	No	No
Eucalyptus amygdalina	Yes	No	No	No

As nouns, peppermint and Eucalyptus amygdalina are synonyms defined as:

Other synonyms of peppermint include peppermint gum, red gum.

peppermint (noun)	Eucalyptus amygdalina (noun)
a candy flavored with peppermint oil	red gum tree of Tasmania
herb with downy leaves and small purple or white flowers that yields a pungent oil used as a flavoring
red gum tree of Tasmania