They started as same word, but their meanings have drifted apart over time.
Soop, wimmen, and headake did not make the cut
Is it all the same anyway?
Thawing one of the mysteries of English
The awkward case of 'his or her'
The landmark edition that transformed the way dictionaries are made.
Here's the lowdown on what may be the most confusing pair of words in the English language.