Some practical guidance, and interesting history, about a common mistake.
They started as same word, but their meanings have drifted apart over time.
Head, shoulders, metaphors, and toes
The awkward case of 'his or her'
Why both words are equally good for you.
'Mischievous,' 'nuclear,' and other words to pronounce with caution.
The most common vowel sound in English causes many spelling problems.