1. ticker
2. timepiece, timekeeper, shift
3. work shift, duty period, vigil
4. surveillance, time period
5. period of time, period, lookout
6. lookout man, sentinel, sentry, spotter, scout, picket, watchman, watcher, security guard, vigil

1. rite, religious rite, observe
2. follow, watch over, keep an eye on, check, check up on, look into, check out, suss out, check over, go over, check into, view
3. see, catch, take in, look on
4. look out
5. watch out, determine
5. check, find out, see, ascertain, learn