genus Helwingia vs Helwingia

genus Helwingia and Helwingia both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Helwingia	Yes	No	No	No
Helwingia	Yes	No	No	No

As nouns, genus Helwingia and Helwingia are synonyms defined as:

genus Helwingia and Helwingia: deciduous dioecious shrubs native to woodland thickets in low mountains in Japan

genus Helwingia (noun)	Helwingia (noun)
deciduous dioecious shrubs native to woodland thickets in low mountains in Japan	deciduous dioecious shrubs native to woodland thickets in low mountains in Japan