As proper nouns the difference between fanny and fan
is that
fanny is
A diminutive of Frances, also used as a female given name.Fan is a diminutive of Frances.
As nouns the difference between fanny and fan
is that
fanny is the female genitalia while
fan is a hand-held device consisting of concertinaed material, or slats of material, gathered together at one end, that may be opened out into the shape of a sector of a circle and waved back and forth in order to move air towards oneself and cool oneself.
As a verb fan is
to blow air on (something) by means of a fan (hand-held, mechanical or electrical) or otherwise.
As an abbreviation FAN is
file area network.