The phrase 'ties that bind' is often used to refer to the strong relationships between people, such as family or friends. The two crossword solutions for this phrase are TRUSSES (7 letters) and CORDS (5 letters). TRUSSES are structures made of connected elements that are used to support a load, such as a bridge or a roof. CORDS are thin, flexible strands of material, such as rope or string. Both TRUSSES and CORDS can be used to bind things together, making them an apt metaphor for the strong relationships that make up the ties that bind.