That's completely different.

• The border wall was a government project, and a large chunk of the money for it came Trump declaring a national emergency and using that to redirect around $7 billion of funding meant for other things to it after Congress refused to provide the level of funding he wanted.

Biden cancelled those parts that Trump had added. He did not cancel those parts that Congress had voted to fund. He wanted those stopped too but went about it through normal channels: he asked Congress to cancel them. Congress did not, and so his administration continued constructing those parts.

• The wind farm is a private project.