I get this question often, and I thought it might be useful to you.
"What is the difference between an open house and a showing?"
An open house is when a homeowner and agent set aside a window of time where anyone can come and check out the property. Open houses tend to happen on weekends, but they can happen at any time, and they usually run for a couple of hours.
A showing is a private tour of the property. It's more intimate, and it allows a closer look, especially for buyers interested in making an offer.
I'm always open to questions -- if any come up during your home search, feel free to send them my way!