warning

nouns

a message informing of danger
"a warning that still more bombs could explode"
is derived from
is a type of (narrower)
a speech act that conveys information
cautionary advice about something imminent (especially imminent danger or other unpleasantness)
"a letter of admonition about the dangers of immorality"; "the warning was to beware of surprises"; "his final word of advice was not to play with matches"
is derived from
notification of something, usually in advance
"they gave little warning of their arrival"; "she had only had four days' warning before leaving Berlin"
is a type of (narrower)
informing by words

adjectives

serving to warn
"shook a monitory finger at him"; "an exemplary jail sentence"