A property tax and a land value tax are a bit different: a land value tax taxes the unimproved value of a plot, while a property tax taxes the total value, including the assessed value of the buildings on the land.
One effect of property taxes is that a parking lot downtown pays a fraction of what an apartment building next door pays. With a land value tax, they pay the same, which discourages land speculation by encouraging efficient uses of land.
And we’ve certainly never gone as far as Georgism, which suggests a land value tax as the main or only source of government funding, set to be around what an unimproved lot on the same location would lease for.