raketo

Check the dictionary before you assume. Raketo has three senses, not one. It is the firework that goes up and bursts. It is the rocket in the engineering sense, the vehicle or the missile that flies by throwing propellant backwards. And it is a sports racket, the thing you hit a tennis ball with, listed as a synonym of the more precise rakedo. Careful writers prefer rakedo for the racket to keep the two apart, but the dictionary gives both, and if somebody hands you a raketo at a tennis court they are not being funny.

Which means the word contains two etymologies. The flying one comes from Italian rocchetta, a little distaff or bobbin, because the earliest firework rockets were shaped like one. The hitting one comes from Arabic rāḥa, the palm of the hand, through medieval Latin and into French raquette: before there were strings there was a hand, and the tool is named after the thing it replaced. Two words, two continents, one spelling.

A false seam. Raketo is not rako plus the diminutive -et-. There is no root rako in Esperanto, and if there were, a raketo would be a small one of them rather than something that leaves the atmosphere. The -et in the middle is Italian, and it did mean little, but that happened in Italy long before the word got here.

The band's other explosion. Vulkano two ranks back at 2,834 is the same physics with worse aim. Raketo also gives raketilo for a launcher and kosmoraketo for a space rocket, built with kosmo at 1,382.