Alnus glutinosa vs common alder

Alnus glutinosa and common alder both are nouns.

Word	Noun	Adjective	Verb	Adverb
Alnus glutinosa	Yes	No	No	No
common alder	Yes	No	No	No

As nouns, Alnus glutinosa and common alder are synonyms defined as:

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

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

Alnus glutinosa (noun)	common alder (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