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

&
Common: <ampersand>; amper; and. Rare: address (from C);
reference (from C++); andpersand; bitand; background (from
`sh(1)'); pretzel; amp. [INTERCAL called this `ampersand';
what could be sillier?]

'
Common: single quote; quote; <apostrophe>. Rare: prime;
glitch; tick; irk; pop; [spark]; <closing single quotation
mark>; <acute accent>.

()
Common: left/right paren; left/right parenthesis; left/right;
paren/thesis; open/close paren; open/close; open/close
parenthesis; left/right banana. Rare: so/al-ready;
lparen/rparen; <opening/closing parenthesis>; open/close round
bracket, parenthisey/unparenthisey; [wax/wane]; left/right
ear.

*
Common: star; [{splat}]; <asterisk>. Rare: wildcard; gear;
dingle; mult; spider; aster; times; twinkle; glob (see
{glob}); {Nathan Hale}.

+
Common: <plus>; add. Rare: cross; [intersection].

,
Common: <comma>. Rare: <cedilla>; [tail].

-
Common: dash; <hyphen>; <minus>. Rare: [worm]; option; dak;
bithorpe.

.
Common: dot; point; <period>; <decimal point>. Rare: radix
point; full stop; [spot].

/
Common: slash; stroke; <slant>; forward slash. Rare:
diagonal; solidus; over; slak; virgule; [slat].