Watch

garde

(person or group of people who guard)

montre

(portable or wearable timepiece)

poste

(place where a watchman is posted)

veille

(particular time period)

faire attention

(to be wary)

faire gaffe

(to be wary)

observer

(to observe)

prendre garde

(to be wary)

regarder

(to look at for a period of time)

regarder

(to observe)

surveiller

(to attend or guard)

veiller

(to be vigilant)

être vigilant

(to be vigilant)