縛る | To bind a string AROUND something – to shackle a prisoner, to tie up a masochist, to put one’s hair in a pony tail. TTTSITU |
束縛 | To be tied up (figuratively):by a controlling, jealous lover. Or by overtime work. PPP |
結ぶ | To tie a knot in a string, shoelace, strap, etc. TTT |
括る | Literally, it means tie up, but in practice, it’s used only in the jukugo 締めくくる, which means, “to conclude, to wind up.” SITU |