'Poets laureate'? 'Court-martials'? The curious history of postpositive adjectives in English.
A definitive answer.
Why does it sound strange to say 'funner' or 'funnest?'
Thawing one of the mysteries of English
How to remember which is which
English was never the same after the Norman Conquest
They started as same word, but their meanings have drifted apart over time.