Cautions

Precept or warning against evil or danger of any kind; exhortation to wariness; advice; injunction; prudence in regard to danger; provident care

A careful attention to the probable effects of an act, in order that failure or harm may be avoided

"The guideline expressed caution against excessive radiographic imaging."

Security; guaranty; bail.

One who draws attention or causes astonishment by their behaviour.

"Oh, that boy, he's a caution! He does make me laugh."

To warn; to alert, advise that caution is warranted.

To give a yellow card