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.
Eggplants seem to love hot weather and grow well in all parts of Texas. As tomatoes, peppers, and the rest of a spring/summer garden succumb to the sweltering heat and relentless sun of late summer in Texas, eggplants keep producing until cool weather arrives in early fall. Eggplants prefer well-drained, sunny locations to grow.