Words Z can say...

mommy
dada
clothes
pants
shirt
car
green
purple ( we fought over what color a green crayon was...she said purple and we went back and forth for a few minutes green...purple....green...purple)
blue
all done
up (usually proceeded by a growl)
ball
hi
buh bye
kick
power (she is trying to say power puff girls)
puff
milk
elmo
she tries to sing the alphabet but it is like a b c da and then random sounds to the alphabet music
oh and la la la la when she hits that part of the elmo's world song
and she can tell you what animals say
There may be more but this is what I can think of at the moment.