Home hifi gear is prettier like Pogre said, think nicer finishes to better fit in people's living rooms, pro being more utilitarian/industrial. That can matter even in a party house I suppose, too.
Pro speakers may be self powered (aka active speakers) to save you on dealing with a separate amp, too....altho depends what you might use for sources, maybe even a mixer might be in order. There are pro amps like QSC, Crown, Yamaha and some others if you want non-powered speakers (aka passive speakers). Here's a page of active/powered speakers from one of the stores that typically carry this if you have one near you (like Guitar Center, Sweetwater, Sam Ash, etc)
https://www.sweetwater.com/store/search.php?s=speakers+powered
For sources are you going to use optical disc players? Streaming devices? Turntables? And/or?