This is the 6250th most frequent Russian word.
угроза
Threat.
Here, 'угроза' (threat) means an expression of intent to cause harm.
Его угроза была воспринята всерьез.
His threat was taken seriously.
In this context, 'угроза' (threat) signifies factors that pose danger or harm.
Существуют угрозы для экосистемы из-за изменения климата.
There are threats to the ecosystem due to climate change.
In this sentence, 'угроза' (threat) refers to a potential danger or risk.