The main differences between emitter and collector are doping concentration and size. The emitter is heavily doped, while the collector is lightly doped. You could try to swap them, but you'll get a very low \$H_{FE}\$, probably even less than 1.
Image Credit: Photo: Oxmoor House. SEASON: Although available year-round, eggplant is at its peak from July to October. CHOOSING: When selecting, look for eggplants with firm, glossy skin. Size and color vary widely among types, but the eggplant should feel heavy. Avoid those with wrinkled skin, soft spots, or brown patches.
Eggplant needs between 1 and 2 inches of water per week -- from rain, manual watering or both -- to grow well and produce a tender crop. The 1 to 2 inches of water will wet the soil 5 to 6 inches deep. Water slowly once a week so the water seeps deep into the soil rather than watering lightly more frequently.