Alnus glutinosa vs Alnus vulgaris

Alnus glutinosa and Alnus vulgaris both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alnus glutinosa	Yes	No	No	No
Alnus vulgaris	Yes	No	No	No

As nouns, Alnus glutinosa and Alnus vulgaris are synonyms defined as:

Alnus glutinosa and Alnus vulgaris: medium-sized tree with brown-black bark and woody fruiting catkins; leaves are hairy beneath

Other synonyms of Alnus glutinosa include common alder, European black alder.

Alnus glutinosa (noun)	Alnus vulgaris (noun)
medium-sized tree with brown-black bark and woody fruiting catkins; leaves are hairy beneath	medium-sized tree with brown-black bark and woody fruiting catkins; leaves are hairy beneath