corn earworm vs tobacco budworm

corn earworm and tobacco budworm both are nouns.

Word	Noun	Adjective	Verb	Adverb
corn earworm	Yes	No	No	No
tobacco budworm	Yes	No	No	No

As nouns, corn earworm and tobacco budworm are synonyms defined as:

corn earworm and tobacco budworm: larva of a noctuid moth; highly destructive to especially corn and cotton and tomato crops

Other synonyms of corn earworm include cotton bollworm, Heliothis zia, tomato fruitworm, vetchworm.

corn earworm (noun)	tobacco budworm (noun)
larva of a noctuid moth; highly destructive to especially corn and cotton and tomato crops	larva of a noctuid moth; highly destructive to especially corn and cotton and tomato crops