Often used, often confused. Here's some guidance and insight.
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.
What about Day Tomorrow?
How 'literally' can mean "figuratively"
Why both words are equally good for you.