a collection of common mistakes which even native speakers make

WRONG                              RIGHT
one axie, two axis                 one axis, two axes
one serie, two series              one series, two series
one specie, two species            one species, two species
one parenthesie, two parenthesis   one parenthesis, two parentheses
per say                            per se
noone                              no one
x modulus y                        x modulo y
the modulo is y                    the modulus is y
modulo arithmetic                  modular arithmetic
no historical precedence           no historical precedents
operator precedents                operator precedence
a solution derives here            a solution is derived here
apply arguments to a function      apply a function to arguments
an historic event                  a historic event
hence why                          hence
to loose something                 to lose something
lose lips sink ships               loose lips sink ships
first priority                     top priority
another alternative                the/an alternative
she was effected by the loss       she was affected by the loss
a new law has been affected        a new law has been effected
in principal                       in principle
the principle cause                the principal cause
could/should/would of              could/should/would have
far and few in between             few and far between
similarily                         similarly
ameshed                            enmeshed
pneumonic 3-letter code            mnemonic 3-letter code
amount of items                    number of items
"abacus" has 5 unique letters      "abacus" has 5 distinct letters
legend says it                     legend has it
9 soldiers were taken prisoners    9 soldiers were taken prisoner