ilang-ilang vs flowering tree

ilang-ilang and flowering tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
ilang-ilang	Yes	No	No	No
flowering tree	Yes	No	No	No

As nouns, flowering tree is a hypernym of ilang-ilang; that is, flowering tree is a word with a broader meaning than ilang-ilang:

ilang-ilang: evergreen Asian tree with aromatic greenish-yellow flowers yielding a volatile oil; widely grown in the tropics as an ornamental
flowering tree: any tree having seeds and ovules contained in the ovary

Other hypernyms of ilang-ilang include angiospermous tree.

ilang-ilang (noun)	flowering tree (noun)
evergreen Asian tree with aromatic greenish-yellow flowers yielding a volatile oil; widely grown in the tropics as an ornamental	any tree having seeds and ovules contained in the ovary
oil distilled from flowers of the ilang-ilang tree; used in perfumery