Both are old terms as noted in the OxfordED (my post of long ago). Fake is also allied to the Scottish faik (I made a mistake and called it Scandanavian). No one seems to have the Navy Seamans Manual at hand to find current naval usage but fake is the proper term as far as I can see. All those cds with "flake" will have to be withdrawn and recycled as Lawrence Welk schottisches and performers who use flake will immediately be apprehended and placed in public stocks until they recant.