watcher

As a noun watcher

is someone who watches or observes.

As a proper noun warden is

.

As nouns the difference between lookout and watcher

is that lookout is a vantage point with a view of the surrounding area while watcher is someone who watches or observes.

As nouns the difference between caretaker and watcher

is that caretaker is someone who takes care of a place or thing; someone looking after somewhere, or with responsibility for keeping a place in good repair while watcher is someone who watches or observes.

As an adjective caretaker

is temporary, on a short term basis.

As nouns the difference between watcher and gazer

is that watcher is someone who watches or observes while gazer is one who gazes.

As nouns the difference between watchdog and watcher

is that watchdog is a guard dog while watcher is someone who watches or observes.

As a verb watchdog

is to perform a function analogous to that of a watchdog; to guard and warn.

As nouns the difference between watcher and auditor

is that watcher is someone who watches or observes while auditor is one who audits bookkeeping accounts.

As nouns the difference between overseer and watcher

is that overseer is one who oversees or supervises a supervisor while watcher is someone who watches or observes.

As nouns the difference between sentinel and watcher

is that sentinel is a sentry or guard while watcher is someone who watches or observes.

As a verb sentinel

is to watch over as a guard.

As nouns the difference between streamer and watcher

is that streamer is a long, narrow flag, or piece of material used or seen as a decoration while watcher is someone who watches or observes.

As nouns the difference between watcher and supervisor

is that watcher is someone who watches or observes while supervisor is a person with the official task of overseeing the work of a person or group.