Tuber vs genus Tuber

Tuber and genus Tuber both are nouns.

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

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

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

Tuber (noun)	genus 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