| sentry(noun, case, attention, overlook, guard) |
| lookout(noun, verb, place, cover, keep) |
| gaze(verb, consider, see, respect, note) |
| note(verb, support, keep, mark, consider) |
| follow(verb, support, act, check, keep) |
| inspect(verb, action, study, control, check) |
| look at(verb, expression, phrasal verb, study, check) |
| picket(noun, person, guard, warning, spy) |
| observation(noun, care, case, attention, overlook) |
| protect(verb, hold, cover, keep, consider) |
| notice(noun, verb, study, check, keep) |
| stare(verb, study, check, consider, see) |
| vigil(noun, control, care, case, attention) |
| behold(verb, study, keep, mark, consider) |
| eye(noun, verb, study, check, keep) |
| look after(verb, expression, phrasal verb, support, hold) |
| mark(verb, keep, consider, see, respect) |
| spy(noun, verb, mark, consider, see) |
| tend(verb, trouble, cover, keep, consider) |
| timepiece(noun, body, thing, device, alarm) |