The free player is what earlier on was the normal version of Fusion. So you only lack the professional features like connect to a vSphere host, have the network editor and a few other smaller issues.

See the Compare tab at [0] for a complete list.

edit: Oh.. and if you meant VMware Workstation Player then see this list [1]

[0] https://www.vmware.com/products/fusion.html

[1] https://store-us.vmware.com/compare_workstation