FOURTH LETTER EXCHANGE
From The Enigma
NPL Magazine - May, 2010
SCARE E. BYRD

The two answer words to this flat differ only by their fourth letter, as indicated by the (capitalized) keywords.

You can't corral
A pretty gal
Or tell her what to do.
She won't RECANT,
Her fealty's scant,
She'll only laugh at you.
And worse, one day,
She'll drift away
And leave you for a fool.
So my advice
Is don't look twice -
The RECENT ones are cruel.

Answer:

COMPLY
COMELY