Silybum vs Asteraceae

Silybum and Asteraceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
Silybum	Yes	No	No	No
Asteraceae	Yes	No	No	No

Silybum (noun)	Asteraceae (noun)
small genus of east African herbs	plants with heads composed of many florets: aster, daisy, dandelion, goldenrod, marigold, lettuces, ragweed, sunflower, thistle, zinnia