This thread has gone off-track, I fear. There IS a definition of flake "blade," and painterX7 started the thread by showing some blades that fit the definition. Every chert or flint tool starts as a flake, but not every tool is a flake blade.
Here is a definition that would exclude many of the tools posted in this thread:
Blade tool definition:
1. twice as long as wide with blade margins fairly parallel.
2. two or more longitudinal crests or ridges indicating other flakes were removed from the core in the same direction.
Blades are the hallmark of the European Upper Paleolithic period and have antecedents in the Mousterian and perhaps even the late Acheulean periods. Many of the tools made on blades described for the European Upper Paleolithic are found also at sites in North America. ....B. Purdy, FLORIDA'S PREHISTORIC STONE TECHNOLOGY