"up"

"UP" means I want to sit up on the piano bench
"UP" means I want you to hold me or sit in your lap
"UP!" means I can get up on the couch all by myself
"UP" means I'm hungry put me in my highchair
"UP" seems to be her favorite word these days

Some other words she has learned at almost 18 months
ba-bye, hi, momma, dada, Taya, enna (Sienna), ball, bebe (baby), ouch, oweee, up, wow, whoa, cheese, no-no, uh-oh, amen (prayer).
She also makes monkey noises, growles, snake sound, buzzz, vroom, vroom, and this scrary noise when she's coming to get you that she makes from the back of her mouth kind of like a tiger:)