Pilosella officinarum vs Hieracium pilocella

Pilosella officinarum and Hieracium pilocella both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pilosella officinarum	Yes	No	No	No
Hieracium pilocella	Yes	No	No	No

As nouns, Pilosella officinarum and Hieracium pilocella are synonyms defined as:

Pilosella officinarum and Hieracium pilocella: European hawkweed having soft hairy leaves; sometimes placed in genus Hieracium

Other synonyms of Pilosella officinarum include mouse-ear hawkweed.

Pilosella officinarum (noun)	Hieracium pilocella (noun)
European hawkweed having soft hairy leaves; sometimes placed in genus Hieracium	European hawkweed having soft hairy leaves; sometimes placed in genus Hieracium