U.S. U.K. trolley tram gas(oline) petrol hood bonnet (car) baby carriage pram buddy mate cop copper (police) There are many more. How did this evolve?
When populations don't really mix with each other (e.g. due to a vast body of water between them and no quick/easy method of traversing) there is no competition between the terms adopted by each geography. So no "fight for survival" of those terms. That'd be my guess. Please Register or Log in to view the hidden image!
Or maybe the Yanks just can't talk proper? https://www.bbc.com/reel/video/p09fv1w9/why-us-english-is-a-history-lesson-for-the-british
Or drive on the correct side of the road Or use metric system Please Register or Log in to view the hidden image!
They come late if they don't start them Want help in the ones they start Loose all of those Please Register or Log in to view the hidden image!
We can spell though. It's "lose" Please Register or Log in to view the hidden image! We come in "late" because they were your wars. We have to give you time to win (fail). There haven't been any U.S. wars since WWII. We've been involved in a few "conflicts" since then and although we could win them the cost in human casualties would be too high. We shouldn't have been in any of them of course but we both know that if there was a legitimate reason to win them we could but there would be little of the original country left. We decided to leave a bit of Iraq and Afghanistan standing and now even Vietnam is largely capitalist in fact if not in name. We "protect" most every developed country so they don't have to spend much on their military budget and when they "help" it's always from the rear because they don't really have any modern systems Please Register or Log in to view the hidden image!
It's typo Came in late because became your war with Pearl Harbour (fail) - was not going to happen Please Register or Log in to view the hidden image!
Language is continually changing. Language is changed primarily by young people, todays slang is tomorrows proper language.
In cases like "buddy", it's usually not known for certain. Early religions in the US may have had a tendency for fellow male members to call each other "brother". A slang corruption may have incrementally developed, like from brother to "bruthy" to "bruddy" to buddy. At any rate, in the US the comrade meaning of "mate" was relegated to items like "schoolmate" and the offshoot from "brother" instead dominated. If that was indeed the origin. Another option for the source of "buddy" is: butty: A friend. [colloquial, UK, now chiefly Wales and West Country] Expanding to other differences, like spelling and pronunciation... The later and supposed purely American spellings of words like "center" and "color" were used as much by Shakespeare as "centre" and "colour". And what's always good for muffled giggles is how certain historical dramas -- produced on both sides of the pond -- have characters speaking in anachronistic posh English. Which didn't take off in earnest until the late 18th century. As a means for the higher classes to distinguish themselves (especially the pretentious nouveau rich). Eventually that accent (or an early form of it) was standardized as RP and thereby taught widely. Before then, rhotic speech was the norm in both the colonies and Britain. The 16th-century English of Shakespeare's time (so-called Original Pronunciation) was, of coarse, even more laden in "rrr" along with other potential peculiarities. "“Every English speaker who hears Original Pronunciation for the first time hears something different in it,” Barrett says. Sometimes that sounds similar to Northern Irish or West Country accents, other times South African or American. --How Americans preserved British English (BBC) video link --> Shakespeare: Original pronunciation
Evolution, two populations separated by a geological feature. This is social not biological but same principle.
Shakespeare had a number of ways that he spelt (aka 'spelled') even his own name (e.g. Shakysper, Shackper, and Shaxpeer, to give just 3 that he used), so it could just be that he didn't care too much about "correct" spelling. Please Register or Log in to view the hidden image! - or he was trying to hide who he was when he used those but wasn't bright enough to call himself John Smith!! Please Register or Log in to view the hidden image! Chip v Crisp Elevator v Lift Sidewalk v Pavement "I could care less" v "I couldn't care less" Please Register or Log in to view the hidden image!
Some (of the six surviving signatures) were abbreviations, a common practice on legal documents. The "Shakespeare authorship conspiracies" would certainly provides fodder for other reasons, though. Please Register or Log in to view the hidden image! English was still poorly standardized at the time, despite efforts to regulate it. As a result, even varying the spelling of one's own name (and publishers doing the same with it) was a frequent occurrence. Similarly with words in general, featuring assorted personal or regional deviations. In theory, that sloppy uniformity could have provided a reservoir for other parts of the Anglophone world to spin off their own divergent spellings from. But most likely in Shakespeare's era they were just probabilities falling out of those lax conventions, and thereby only coincidentally matching some of the later standardized spellings in North American English. _