留まる

(1) to remain/to abide/to stay (in the one place) / (2) to be limited to/to be confined to

留る

(1) to remain/to abide/to stay (in the one place) / (2) to come to a halt/ (3) to stop

護る

(1) to protect/to guard/to defend/ (2) to keep /to abide (by the rules) /to observe/to obey/to follow

止まる