They started as same word, but their meanings have drifted apart over time.
Why does it sound strange to say 'funner' or 'funnest?'
Is it all the same anyway?
Many of today's grammar rules can be traced to the opinions of one 18th century writer.
A simple way to keep them apart. (Most of the time.)
An old-fashioned rule we can no longer put up with.
Is there one standard way?