They started as same word, but their meanings have drifted apart over time.
A simple trick to keep them separate
These people needed a computer
'Poets laureate'? 'Court-martials'? The curious history of postpositive adjectives in English.
There, there. We'll sort it out.
Thawing one of the mysteries of English
How to 'amuse-bouche' without begging pardon for your French