Break up and Fall behind

Break up verb - To cease to exist or cause to cease to exist as a group or organization.

Fall behind and break up are semantically related. In some cases you can use "Fall behind" instead a verb "Break up".

Fall behind verb - Hang (back) or fall (behind) in movement, progress, development, etc..

Break up and fall behind are semantically related. Sometimes you can use "Break up" instead a verb "Fall behind".