a key or a legend maybe? the small symbols could be called icons.
Legend or key.
Symbol
A Legend
a symbol
compass
Not directly. The ancient people who made up the constellations named them for the vague shapes that they thought they saw in the patterns.
active
There are many websites offering similar services. A website called "Build A Sign" provides many services including plastic signs. Another website called "Yard Signs" offers another type of sign. One price is quoted as $13 each when one is purchased, reducing in cost as number purchased increase.
Do you mean WHMIS symbols? The "Flammable" "Corrosive", etc, badges that you see on chemicals?
because they are madatory signs
Music notation.
10
I'm pretty positive Diamond shapes signs are warning signs.
4
Yield signs.
The signs are purely decorative, and they represent the various elements.
Signs of the Zodiac and Tarot have their own symbolism.
The symbols representing the signs can be found at the site below.
what represents the Netherlands
language
shapes
Orange