There are many different means to categorize anchors. With each means, you can get different anchors. But often people are talking about same anchors with different names.
If categorized anchors according to stock, we have stock anchor and stockless anchor.
If according to holding power, we will have conventional anchor, high holding power anchor (HHP), Super High Holding Power anchor (SHHP), etc
If according to use, there are boat anchor, ship anchor, offshore anchor, etc.
