lemon sumac vs fragrant sumac

lemon sumac and fragrant sumac both are nouns.

Word	Noun	Adjective	Verb	Adverb
lemon sumac	Yes	No	No	No
fragrant sumac	Yes	No	No	No

As nouns, lemon sumac and fragrant sumac are synonyms defined as:

lemon sumac and fragrant sumac: sweet-scented sumac of eastern America having ternate leaves and yellowish-green flowers in spikes resembling catkins followed by red hairy fruits

Other synonyms of lemon sumac include Rhus aromatica.

lemon sumac (noun)	fragrant sumac (noun)
sweet-scented sumac of eastern America having ternate leaves and yellowish-green flowers in spikes resembling catkins followed by red hairy fruits	sweet-scented sumac of eastern America having ternate leaves and yellowish-green flowers in spikes resembling catkins followed by red hairy fruits