genus Tuber vs Tuber

genus Tuber and Tuber both are nouns.

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

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

genus Tuber and Tuber: type genus of the Tuberaceae: fungi whose fruiting bodies are typically truffles

genus Tuber (noun)	Tuber (noun)
type genus of the Tuberaceae: fungi whose fruiting bodies are typically truffles	type genus of the Tuberaceae: fungi whose fruiting bodies are typically truffles