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danger

In a sentence
Hrozí im vážne nebezpečenstvo.
They are in grave danger.
Nebol si vedomý nebezpečenstva.
He was not aware of the danger.
Je si vedomý nebezpečenstva.
He is aware of the danger.
Tom si je vedomý nebezpečenstva.
Tom is aware of the danger.
Examples from Tatoeba (CC BY 2.0 FR).
Source
Slovak National Corpus (SNK) ↗English gloss from the frequency publish path. Example sentences from Tatoeba (CC BY 2.0 FR).
Full attribution on References.