"Rent" is an economic term, meaning roughly "income derived from mere ownership of an asset" such as land, but also including things like other monopolies.
No it isn't. It is labour. In fact it actually an example of something where the distinction between labour and rent is crystal-clear.
If you're a landlord and you outsource the working of the land to a peasant tenant farmer (as was the norm in many places for thousands of years), your cut is 100% rent, as it is only derived from your (violence-enforced) exclusive ownership rights to the land.
