follow(To track content, people or other entities by adding them to a list of things that you care about and for which you would like to surface updates about changes and activities)
follow(To track content, people or other entities by adding them to a list of things that you care about and for which you would like to surface updates about changes and activities); watch(To monitor an e-mail conversation or newsgroup thread. The headers for messages in a watched conversation appear in a different color, which makes them easier to find in a message list)
