non-breaking space

10 km/h ; 10 km/h

non-breaking hyphen

Abc‑Def

less than

4 < 7 ; 4 < 7

greater than

7 > 4 ; 7 > 4

ampersand

Johnson & Johnson ; Johnson & Johnson

double quotation mark

"ABC" ; "ABC"

single quotation mark (apostrophe)

'ABC' ; 'ABC'

cent

¢ ; ¢

pound

£ ; £

yen

¥ ; ¥

euro

€ ; €

copyright

© ; ©

registered trademark

® ; ®