to have a disagreement or fight with someone
иметь разногласие или ссориться с кем-то (imet' raznoglasiye ili ssorit'sya s kem-to)
"They had a falling out over money issues."
"Они поссорились из-за денежных проблем." (oni possorilis' iz-za denezhnykh problem)
an alternative plan if the first one fails
to secure or restrict access to something completely
to officially charge someone with a crime
to focus and work hard for a long time
Mutual compromise or cooperation.
Unexpected good things can occur.