Fall off and Falling away

Fall off verb - To turn away from a straight line or course.

Falling away and fall off are semantically related In some cases you can replace term "Falling away" with "Fall off", this phrasal verbs are similar.

Fall off and falling away are semantically related in droop topic. Sometimes you can use "Fall off" instead a verb "Falling away", if it concerns topics such as decrease, condense, return to earlier way of doing things.