ironwood tree vs Eastern hop hornbeam

ironwood tree and Eastern hop hornbeam both are nouns.

Word	Noun	Adjective	Verb	Adverb
ironwood tree	Yes	No	No	No
Eastern hop hornbeam	Yes	No	No	No

As nouns, ironwood tree and Eastern hop hornbeam are synonyms defined as:

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

Other synonyms of ironwood tree include ironwood, Ostrya virginiana.

ironwood tree (noun)	Eastern hop hornbeam (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