They started as same word, but their meanings have drifted apart over time.
The awkward case of 'his or her'
'Poets laureate'? 'Court-martials'? The curious history of postpositive adjectives in English.
Many of today's grammar rules can be traced to the opinions of one 18th century writer.
Head, shoulders, metaphors, and toes
The landmark edition that transformed the way dictionaries are made.
What about Day Tomorrow?