ilang-ilang vs ylang-ylang

ilang-ilang and ylang-ylang both are nouns.

Word	Noun	Adjective	Verb	Adverb
ilang-ilang	Yes	No	No	No
ylang-ylang	Yes	No	No	No

As nouns, ilang-ilang and ylang-ylang are synonyms defined as:

ilang-ilang and ylang-ylang: evergreen Asian tree with aromatic greenish-yellow flowers yielding a volatile oil; widely grown in the tropics as an ornamental

Other synonyms of ilang-ilang include Cananga odorata.

ilang-ilang (noun)	ylang-ylang (noun)
evergreen Asian tree with aromatic greenish-yellow flowers yielding a volatile oil; widely grown in the tropics as an ornamental	evergreen Asian tree with aromatic greenish-yellow flowers yielding a volatile oil; widely grown in the tropics as an ornamental
oil distilled from flowers of the ilang-ilang tree; used in perfumery