Inula helenium vs inula

Inula helenium and inula both are nouns.

Word	Noun	Adjective	Verb	Adverb
Inula helenium	Yes	No	No	No
inula	Yes	No	No	No

As nouns, inula is a hypernym of Inula helenium; that is, inula is a word with a broader meaning than Inula helenium:

Inula helenium: tall coarse Eurasian herb having daisylike yellow flowers with narrow petals whose rhizomatous roots are used medicinally
inula: any plant of the genus Inula

Inula helenium (noun)	inula (noun)
tall coarse Eurasian herb having daisylike yellow flowers with narrow petals whose rhizomatous roots are used medicinally	any plant of the genus Inula