tree-shaped vs arboreous

tree-shaped and arboreous both are adjectives.

Word	Noun	Adjective	Verb	Adverb
tree-shaped	No	Yes	No	No
arboreous	No	Yes	No	No

As adjectives, tree-shaped and arboreous are synonyms defined as:

tree-shaped and arboreous: resembling a tree in form and branching structure

Other synonyms of tree-shaped include arboreal, arborescent, arboresque, arboriform, dendriform, dendroid, dendroidal, treelike.

tree-shaped (adjective)	arboreous (adjective)
resembling a tree in form and branching structure	inhabiting or frequenting trees
	resembling a tree in form and branching structure
	abounding in trees