Why are they ridiculous? Words that get used, get used, the etymology is a curiosity to most. In English, we use "computer" even though it used to be a job titl

Why are they ridiculous? Words that get used, get used, the etymology is a curiosity to most. In English, we use "computer" even though it used to be a job title. Native English speakers freely use "rucksack" even though it was stolen from German and even though "backpack" is also available, without the space, as a compound English word for a pack worn on the back. English/German has "briefcase"/"Briefkasten" to describe a box that letters go in, it's just that the former is for transporting letters and the latter is for receiving them.