Red alert and Tip off

Red alert noun - The state of being constantly attentive and responsive to signs of opportunity, activity, or danger.

Tip off and red alert are semantically related. In some cases you can use "Tip off" instead a noun phrase "Red alert".

Tip off verb - Give insider information or advise to.

Red alert and tip off are semantically related. Sometimes you can use "Red alert" instead a noun "Tip off".