As with pronunciation and usage, it's a matter heavily influenced by style.
It represents more than a century of effort on the part of hundreds of learned scholars who have compiled an inventory of all the English words that have been in substantial use since 1150 A.D. It does a wonderful job of documenting the meaning, usage, pronunciation and etymology of these words and is a stunning intellectual accomplishment in almost every possible way.
The CECR wordlists contain only lexical items with no provision of phonetic pronunciation, grammar and usage information, word definitions, dictionary examples and corpus-based learner examples.
At home, I was the purveyor of linguistic righteousness, correcting my family's pronunciation and verb usage, implicitly telling them that if my language wasn't good enough, neither was theirs.
There are some pockets of resistance to dialect change, though: Newcastle and Sunderland were both shown to be pretty committed to still saying "stottie cake" a lot, and generally preserving their pronunciation and colloquialism usage.
The Modern English term Wicca took the Old English wicca as its basis, although the two are fundamentally two distinct words with differing meanings, pronunciation, and grammatical usage, with nearly a millennium between their respective floruits.
Robert L. Nardelli had a reputation for unusual pronunciations and word usage when he was chief executive of Home Depot.
People make judgments based on usage and pronunciation all the time, just as they make judgments based on clothing and hair style and body odor (not to mention gender and skin color).
Look up "lodestar" in the free version, for instance, and you can find an audio pronunciation as well as usage examples, synonyms and the year the word first appeared.
Carefully read the sections on grammar usage and pronunciation.
