These are word's grammars related to watch. Click on any word to go to its word's detail page. Or, go to the definition of watch.
When we look at something, we direct our eyes in its direction and pay attention to it:
See means noticing something using our eyes. The past simple form is saw and the -ed form is seen:
Watch is similar to look at, but it usually means that we look at something for a period of time, especially something that is changing or moving: