Something Funny....

[the other bob wilson]

I was just about to correct you, and point out that it should in fact be 'sideburns'. However, to be completely sure, I decided to Google it... low-and-behold, you're right! Both can be used it would seem.
:o)

I call them sideboards before sideburns to this day.

[splott parker]

I call them sideboards before sideburns to this day.

Of course they’re sideboards.

[light up the darkness]

Of course they’re sideboards.

Fun fact

The term sideburns is a corruption of burnsides, named after American Civil War general Ambrose Burnside