bead tree vs necklace tree

bead tree and necklace tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
bead tree	Yes	No	No	No
necklace tree	Yes	No	No	No

As nouns, necklace tree is a hypernym of bead tree; that is, necklace tree is a word with a broader meaning than bead tree:

bead tree: small tree of West Indies and northeastern Venezuela having large oblong pointed leaflets and panicles of purple flowers; seeds are black or scarlet with black spots
necklace tree: a tree of the genus Ormosia having seeds used as beads

bead tree (noun)	necklace tree (noun)
small tree of West Indies and northeastern Venezuela having large oblong pointed leaflets and panicles of purple flowers; seeds are black or scarlet with black spots	a tree of the genus Ormosia having seeds used as beads