When we can't agree, we end up asking our colleagues from places like the UK, US, Canada, New Zealand, etc. and and they always say "it's no big deal, sounds right to me" and don't see the point in us asking about all these uses of a certain word, preposition, tense use, etc.
Besides the usual nationalist variances in spelling and pronunciation in the countries you mentioned, there is also a generational component in this country, anyway. I'm an old guy, and I tend to adhere to the old way of doing things, including word definitions and usage. The younger people tend to allow the language to "float", often using definitions that one simply does not find in older dictionaries, and using incorrect words interchangeably with the correct ones.
Bear in mind also that many younger Americans are apparently not educated in the finer points of English usage, and will often use an incorrect homonym or simply misspell a word. I then notice that the younger set either does not notice, ignores the mistake, accepts it without question, (the shoulder shrug) or assumes it to be correct! I have no knowledge of similar differences in the U.K, Canada, or N.Z.