Another quick question about domain names

I have a hosting account that allows “add-on” domains but ive never really figured out what they are for.

Basically what i want to do is point slicdigital.net to one page and anotherdomain.com to another page:

slicdigital.net —> slicdigital.net homepage
anotherdomain.com —> anotherdomain.com homepage

and it all needs to be with this one hosting account…can that be done? is that how an add-on domain works?