They started as same word, but their meanings have drifted apart over time.
The awkward case of 'his or her'
What's with his feathered cap?
Why does it sound strange to say 'funner' or 'funnest?'
'Mischievous,' 'nuclear,' and other words to pronounce with caution.
A definitive answer.
How to 'amuse-bouche' without begging pardon for your French