Syringa persica vs lilac

Syringa persica and lilac both are nouns.

Word	Noun	Adjective	Verb	Adverb
Syringa persica	Yes	No	No	No
lilac	Yes	Yes	No	No

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

Syringa persica: small densely branching Asiatic shrub having lanceolate leaves and panicles of fragrant lilac flowers
lilac: any of various plants of the genus Syringa having large panicles of usually fragrant flowers

Syringa persica (noun)	lilac (noun)
small densely branching Asiatic shrub having lanceolate leaves and panicles of fragrant lilac flowers	any of various plants of the genus Syringa having large panicles of usually fragrant flowers

Syringa persica (adjective)	lilac (adjective)
	of a pale purple color