Words to Describe symbols

How symbols often is described ("________ symbols")

• sacred
• closed
• distinct
• phonetic
• solid
• numerical
• schematic
• primitive
• various
• religious
• graphical
• expressive
• cultural
• potent
• terminal
• mathematical
• arbitrary
• linguistic
• universal
• pictorial
• conventional
• mystic
• open
• appropriate
• corresponding
• logical
• archetypal
• basic
• visible
• graphic
• outward
• mere
• visual
• meaningful
• national
• key
• christian
• abstract
• phallic
• printed
• familiar
• following
• powerful
• geometric
• different
• musical
• traditional
• sexual
• special
• concrete
• significant
• greek
• strange
• standard
• verbal
• complex
• ancient
• external