Here are some examples of how you may refer to objects:
examine (held) item get (floor) item get item from pack get item from (held) pack examine item 2 get item 3 from (floor) chest
Most objects have a simple one-word name which you may use to refer to them. You may also be more specific:
examine key examine red key get dowel get 1 square foot of outstanding pine dowel
Hope this helps.