tiger lily vs Lilium catesbaei

tiger lily and Lilium catesbaei both are nouns.

Word	Noun	Adjective	Verb	Adverb
tiger lily	Yes	No	No	No
Lilium catesbaei	Yes	No	No	No

As nouns, tiger lily and Lilium catesbaei are synonyms defined as:

tiger lily and Lilium catesbaei: lily of southeastern United States having cup-shaped flowers with deep yellow to scarlet recurved petals

Other synonyms of tiger lily include leopard lily, pine lily.

tiger lily (noun)	Lilium catesbaei (noun)
lily of southeastern United States having cup-shaped flowers with deep yellow to scarlet recurved petals	lily of southeastern United States having cup-shaped flowers with deep yellow to scarlet recurved petals
east Asian perennial having large reddish-orange black-spotted flowers with reflexed petals