parentheticals provide some usage information.

!
Common: {bang}; pling; excl; shriek; .
Rare: factorial; exclam; smash; cuss; boing; yell; wow; hey;
wham; eureka; [spark-spot]; soldier.

"
Common: double quote; quote. Rare: literal mark;
double-glitch; ; ; dirk;
[rabbit-ears]; double prime.

#
Common: ; pound; pound sign; hash; sharp;
{crunch}; hex; [mesh]; octothorpe. Rare: flash; crosshatch;
grid; pig-pen; tictactoe; scratchmark; thud; thump; {splat}.

$
Common: dollar; . Rare: currency symbol; buck;
cash; string (from BASIC); escape (when used as the echo of
ASCII ESC); ding; cache; [big money].

%
Common: percent; ; mod; grapes. Rare:
[double-oh-seven].

&
Common: ; amper; and. Rare: address (from C);
reference (from C++); andpersand; bitand; background (from
`sh(1)'); pretzel; amp. [INTERCAL called this `ampersand';