Linked from
The 17 pages that link to The Onion, each with the reason it gives.
BulbBroader topic: The onion is a familiar edible example of a true bulb.
AlliumBroader topic: It is one of the genus's most widely cultivated food crops.
ScallionNarrower topic: Scallions are harvested from onions before substantial bulb formation.
AsparagalesBroader topic: Onion is a major food crop in the Asparagales family Amaryllidaceae.
ChivesCompared with: Chives share onion aroma but are harvested mainly for their slender leaves.
Tomato soupRelated: Cooked onion supplies sweetness and aromatic depth beneath the tomatoes.
BeshbarmakRelated: Sliced onions are simmered in broth to make the dish’s characteristic topping.