top onion vs Egyptian onion

top onion and Egyptian onion both are nouns.

Word	Noun	Adjective	Verb	Adverb
top onion	Yes	No	No	No
Egyptian onion	Yes	No	No	No

As nouns, top onion and Egyptian onion are synonyms defined as:

top onion and Egyptian onion: type of perennial onion grown chiefly as a curiosity or for early salad onions; having bulbils that replace the flowers

Other synonyms of top onion include Allium cepa viviparum, tree onion.

top onion (noun)	Egyptian onion (noun)
type of perennial onion grown chiefly as a curiosity or for early salad onions; having bulbils that replace the flowers	type of perennial onion grown chiefly as a curiosity or for early salad onions; having bulbils that replace the flowers