Spot coolers are an excellent way to cool down an area that either has no air conditioning or needs to be cooler than can be achieved with regular air conditioning. Typically the cost of a spot cooler is in the range of $900 to $1100 dollars. While the initial investment is greater, the spot cooler is typically the more energy efficient choice.

The word originally is an adverb. You can easily spot adverbs as most of them end in -ly.

it depends on the context

initial (as your initials) - Initial

initial (as in first) - erste/erster/erstes

Displacement is the distance from the final placement of the object from the initial point. So, since the swimmer started and ended in the same spot, it is zero.