This is the 9070th most frequent Japanese word.
渡
"渡" means "to cross" or "to traverse."
渡る - This is used in its action form to refer to crossing over something like a bridge.
橋を渡ると公園があります。
When you cross the bridge, there's a park.
渡す - Here,渡 is part of 渡す, a verb meaning 'to hand over something', indicating transfer.
この資料を手渡していただけますか。
Could you hand this document over?
渡る - Used in passive or completion form to describe something being transferred or given.