They started as same word, but their meanings have drifted apart over time.
Is 'alright' all right?
'Mischievous,' 'nuclear,' and other words to pronounce with caution.
And how did it get that name?
Or both? Or neither?
Many of today's grammar rules can be traced to the opinions of one 18th century writer.
Comedian ISMO tries to figure out 'one' and 'two'