silver-bell tree vs silverbell tree

silver-bell tree and silverbell tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
silver-bell tree	Yes	No	No	No
silverbell tree	Yes	No	No	No

As nouns, silver-bell tree and silverbell tree are synonyms defined as:

silver-bell tree and silverbell tree: medium-sized tree of West Virginia to Florida and Texas

Other synonyms of silver-bell tree include Halesia carolina, Halesia tetraptera, opossum wood, snowdrop tree.

silver-bell tree (noun)	silverbell tree (noun)
medium-sized tree of West Virginia to Florida and Texas	medium-sized tree of West Virginia to Florida and Texas