Hungarian lilac vs lilac

Hungarian lilac and lilac both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hungarian lilac	Yes	No	No	No
lilac	Yes	Yes	No	No

As nouns, lilac is a hypernym of Hungarian lilac; that is, lilac is a word with a broader meaning than Hungarian lilac:

Hungarian lilac: central European upright shrub having elliptic leaves and upright clusters of lilac or deep violet flowers
lilac: any of various plants of the genus Syringa having large panicles of usually fragrant flowers

Hungarian lilac (noun)	lilac (noun)
central European upright shrub having elliptic leaves and upright clusters of lilac or deep violet flowers	any of various plants of the genus Syringa having large panicles of usually fragrant flowers

Hungarian lilac (adjective)	lilac (adjective)
	of a pale purple color