Gentiana acaulis vs gentianella

Gentiana acaulis and gentianella both are nouns.

Word	Noun	Adjective	Verb	Adverb
Gentiana acaulis	Yes	No	No	No
gentianella	Yes	No	No	No

As nouns, Gentiana acaulis and gentianella are synonyms defined as:

Gentiana acaulis and gentianella: low-growing alpine plant cultivated for its dark glossy green leaves in basal rosettes and showy solitary bell-shaped blue flowers

Gentiana acaulis (noun)	gentianella (noun)
low-growing alpine plant cultivated for its dark glossy green leaves in basal rosettes and showy solitary bell-shaped blue flowers	low-growing alpine plant cultivated for its dark glossy green leaves in basal rosettes and showy solitary bell-shaped blue flowers