They started as same word, but their meanings have drifted apart over time.
Many of today's grammar rules can be traced to the opinions of one 18th century writer.
There, there. We'll sort it out.
How the irregular 'snuck' sneaked into the dictionary
'Mischievous,' 'nuclear,' and other words to pronounce with caution.
What's with his feathered cap?
Often used, often confused. Here's some guidance and insight.