In 2019, the governing bodies of golf changed the wording and definition for hazards. They adjusted the rules to allow for grounding your club and a few other aspects of the new penalty area. Basically, the rule changes made it easier to navigate the penalty area and in my opinion, it was a positive change to the rules. In case you are still curious about what the penalty area still means, I found a video that should make things a bit easier.
I hope this video helps clarify what the penalty area consists of and how to play fairly from it. It is important the understand this basic rule change because it might save you strokes during your round.
I am a grateful golfer! See you on the links!