It is meant to include only words whose misuse is deprecated by most usage writers, editors, and professional grammarians defining the norms of Standard English.
Some of the examples are homonyms or pairs of similarly spelled words that are often confused.
The words listed below are frequently used in ways that major English dictionaries do not condone in any definition.
There may be regional variations in grammar, orthography, and word-use, especially between different English-speaking countries.
Such differences are not classified normatively as non-standard or "incorrect" once they have gained widespread acceptance in a particular country.