inula vs Inula helenium

inula and Inula helenium both are nouns.

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

As nouns, Inula helenium is a hyponym of inula; that is, Inula helenium is a word with a more specific, narrower meaning than inula:

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

Other hyponyms of inula include elecampane.

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