I have an Armoir with two drawers on the bottom... The bottom drawer is stuck--you cannot open or close it nothing is caught in it we have emptied it and left it as is. I would like to use the drawer however. Any suggestions why it is so hard to open and close?

Probably because the wood has expanded in that one drawer ?

I would suggest taking the drawer all the way out and make sure that any glued joints have not come loose. If they have, reglue and clamp them.

If any areas have expanded due to moisture, then you might lightly sand any areas with a 150 to 220 grit sandpaper where friction occurs and then apply a lubricant to them, such as a plain old bar of soap.