Downtrend and Fall-off

Fall-off and downtrend are semantically related in position topic. In some cases you can use "Fall-off" instead a noun "Downtrend", when it comes to topics like drop, depression, decrease.

Downtrend and fall-off are semantically related in position topic. Sometimes you can use "Downtrend" instead a noun phrase "Fall-off", if it concerns topics such as drop, depression, decrease.