The noun pain refers to physical suffering or the feeling of discomfort or distress. As a verb, pain means to cause hurt or distress.
The noun pane means a single piece, panel, or sheet (as of glass).
Examples:
- Some people have so much trouble coping with the pain of divorce that they turn to drugs or alcohol.
- George could be extremely annoying at times--a real pain in the neck.
- The inspector stared at the pile of broken glass lying on the floor beneath the broken pane.
Practice:
(a) Tania sat with her nose pressed against the dirty window _____.
(b) After pitching nine innings, Robin felt a sharp _____ in his shoulder.


