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.
During week 28 of pregnancy, your baby is the size of an eggplant, measuring ten (10) inches from crown to rump or fifteen and a half (15.5) to sixteen (16) inches from head to heel and weighing about two and a half (2.5) pounds.