genus Gnetum vs gnetum

genus Gnetum and gnetum both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Gnetum	Yes	No	No	No
gnetum	Yes	No	No	No

genus Gnetum (noun)	gnetum (noun)
type genus of the Gnetaceae; small trees or shrubs usually with climbing jointed stems and terminal spikes of flowers with orange-red seeds clustered in rough cones	small tropical tree with tiered branches and divaricate branchlets having broad glossy dark green leaves; exploited for its edible young leaves and seeds that provide a fine flour