please help with tool vs weapon edge pics and men's womens knives

[VANDOO]

IT MIGHT GET MORE COMMENTS IF YOU BRING OVER A PICTURE TO THIS POST.
WHEN I LOOK AT IT I SEE 4 PRIMARY EDGES.
1. THE ROUNDED AX END WITH THE DAMMAGE. LIKELY USED BY HOLDING OR HAFTING THE SMALLER TAPERED END.
2. A CONCAVE CUTTING EDGE
3. A CONVEX CUTTING EDGE
4. A SHARP END FOR PUNCHING,PECKING OR CHISELING IN SMALLER PALCES OR MAKEING A HOLE.
ALL FOUR EDGES WORK BETTER IN SOME APPLICATIONS THAN OTHERS.
ANY ROCK WORKS WELL AS A WEAPON IF YOU ARE AN ACCURATE AND STRONG THROWER. THE FORM OF THIS ITEM WOULD NOT BE MY FIRST CHOICE AS A THROWING ROCK BUT IT COULD BE USED.
SOME STONE TOOLS HAVE A KNOB OR BUMP OF ROCK THAT IS INTENTIONALY LEFT ON THE SIDE OF THE TOOL FOR THE THUMB TO REST AGAINST AND GIVE A BETTER GRIP WHILE USING THE TOOL.
CELTS HAVE ONE EDGE, MOST POINTS HAVE TWO EDGES, SOME KNIVES HAVE UP TO 4 EDGES WITH OPPOSITE BEVELS FOR EXAMPLE THE HARIHAIE KNIFE (SPELLING ??) SERREATED TOOLS WHICH WERE PERHAPS USED TO SAW ARE AROUND TOO. SO WHY NOT A MULTI TOOL?

A FEW PICTURES JUST FOR FUN.
TWO PICTURES OF A ESKIMO ULU WITH WOODEN HANDLE
ONE EGYPTIAN FLINT SERRATED KNIFE WITH HANDLE AND TWO POINTS
THREE PICTURES OF A EGYPTIAN DAGGER WITH CARVED HIPPO IVORY HANDLE. ESTIMATED 3250 BC.