swede vs Brassica napus napobrassica

swede and Brassica napus napobrassica both are nouns.

Word	Noun	Adjective	Verb	Adverb
swede	Yes	No	No	No
Brassica napus napobrassica	Yes	No	No	No

As nouns, swede and Brassica napus napobrassica are synonyms defined as:

swede and Brassica napus napobrassica: a cruciferous plant with a thick bulbous edible yellow root

Other synonyms of swede include rutabaga, rutabaga plant, Swedish turnip, turnip cabbage.

swede (noun)	Brassica napus napobrassica (noun)
the large yellow root of a rutabaga plant used as food	a cruciferous plant with a thick bulbous edible yellow root
a cruciferous plant with a thick bulbous edible yellow root