por
for [means or methods (journey)]
para
for [goals, purposes, directions, (destination)]
su
his, her, your (formal), their [one possessed object]
sus
his, her, your (formal), their [two or more possessed objects]
es
he is, she is, it is, you(formal) are
son
they are, you all(formal) are
ser
to be (essence), being (essence)
esta
he is, she is, it is, you (formal) are
estan
they are, you all(formal) are
estar
to be [stage], being [stage]
con
with
sin
without
si
if, wheter
sí
yes
mas
more
menos
less
todo
everything
todos, todas
everyone, all of us/you/them
nada
nothing, anything