So hogar is more like 'home' and casa is more of a structural reference like 'house'?
I live in Spain and to say "I am going home" the locals use "voy a casa". I have reported it.
The answer is "el hogar" - "home"
Casa is "house" (unless it's used with an action, like she returned home: ella volvió a casa)
Is anyone else thrown off by the fact that this noun looks like a verb with the -ar ending? I haven't seen any non-verbs end in -ar so far...that I can think of. It's weirding me out.