ironwood tree vs Ostrya virginiana

ironwood tree and Ostrya virginiana both are nouns.

Word	Noun	Adjective	Verb	Adverb
ironwood tree	Yes	No	No	No
Ostrya virginiana	Yes	No	No	No

As nouns, ironwood tree and Ostrya virginiana are synonyms defined as:

ironwood tree and Ostrya virginiana: medium-sized hop hornbeam of eastern North America

Other synonyms of ironwood tree include Eastern hop hornbeam, ironwood.

ironwood tree (noun)	Ostrya virginiana (noun)
a small slow-growing deciduous tree of northern Iran having a low domed shape	medium-sized hop hornbeam of eastern North America
medium-sized hop hornbeam of eastern North America
handsome East Indian evergreen tree often planted as an ornamental for its fragrant white flowers that yield a perfume; source of very heavy hardwood used for railroad ties