Another good example of what language simplification can do is the word "flammable". Flammable means that something can catch fire easily. Originally the word was "inflammable", from Latin "inflammare" - put something on fire. "In-" is also a prefix that can mean "the opposite of", like with "transparent", "intransparent". Today most instructions use "flammable" rather than "inflammable", in order not to confuse people that the "in-" in this case does not mean the opposite of.