Spodoptera exigua vs beet armyworm

Spodoptera exigua and beet armyworm both are nouns.

Word	Noun	Adjective	Verb	Adverb
Spodoptera exigua	Yes	No	No	No
beet armyworm	Yes	No	No	No

As nouns, Spodoptera exigua and beet armyworm are synonyms defined as:

Spodoptera exigua and beet armyworm: moth larva that eats foliage of beets and other vegetables

Spodoptera exigua (noun)	beet armyworm (noun)
moth whose larvae are beet armyworms	moth larva that eats foliage of beets and other vegetables
moth larva that eats foliage of beets and other vegetables