Amygdalus vs Amygdalaceae

Amygdalus and Amygdalaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Amygdalus	Yes	No	No	No
Amygdalaceae	Yes	No	No	No

Amygdalus (noun)	Amygdalaceae (noun)
used in former classifications for peach and almond trees which are now included in genus Prunus	used in former classifications for plum and peach and almond trees which are now usually classified as members of the genus Prunus