Fall back and Get away

Fall back verb - To move back or away (as from something difficult, dangerous, or disagreeable).

Get away and fall back are semantically related In some cases you can use "Get away" instead a verb "Fall back".

Get away verb - Run away from confinement.

Fall back and get away are semantically related in retire topic. Sometimes you can use "Fall back" instead a verb "Get away", if it concerns topics such as leave a place or responsibility.