Bow down and Fall to one's knees

Bow down verb - Bend one's knee or body, or lower one's head.

Fall to one's knees and bow down are semantically related. In some cases you can use "Fall to one's knees" instead a verb "Bow down".

Bow down and fall to one's knees are semantically related. You can use "Bow down" instead a verb phrase "Fall to one's knees".