What is the maximum number of characters for fi...

What is the maximum number of characters for file name on one side, and for pathname on the other, on macOS?

Any difference for such both parameters between Hierarchical File System Plus (HFS Plus, HFS+, Mac OS Extended or HFS Extended) in macOS 10.12 Sierra and older versus Apple File System (APFS) in macOS 10.13 High Sierra and newer?

Thanks.