Teapot Riddle no.22 (fan made)

Question

Teapot Riddle no.22 (fan made).
Alien.

Rules:

I have one word which has several (2 or more) meanings.
Each of the meanings is a teapot (first, second ...).
You try to figure out the word with my Hints.

• First Hint:

  My first teapot grows, and my second will rest.
  You might see your nose or some weird clouds at best.

• Second Hint:

  My first teapot shows itself in a commandment.
  My second has chosen the fallen, much absent.

• Third Hint:

  My first teapot cannot keep promises much;
  It began with a plan of betrayal and such.

• Final Hint (to make it easy):

  My second is down and through it you see dreams.
  It can be a noun or verb under the seams.

Good luck and have fun!
Last teapot riddle. Big thanks to @Jannis for making them!

Also, the title of this puzzle was my inspiration for this puzzle's title.

Answer 1

I believe it is the word

lie

My first teapot grows, and my second will rest. You might see your nose or some weird clouds at best.

Lying causes Pinocchio's nose to grow; you lie down to rest, and if you're outdoors you'll see clouds in the sky.

My first teapot shows itself in a commandment. My second has chosen the fallen, much absent.

Thou shalt not lie; if you fall down, you'll end up lying down.

My first teapot cannot keep promises much; It began with a plan of betrayal and such.

If you lie, you would not keep your word. Lies are also often thought out in advance.

My second is down and through it you see dreams. It can be a noun or verb under the seams.

When you lie down, you sleep and see dreams. Sleep can be either a noun or a verb, and you'd sleep under a blanket made of seams!