Here are the words sorted into the correct columns:

**Countable Nouns:**
- fish
- Orange
- Apple
- potato
- gram
- bread

**Uncountable Nouns:**
- coffee
- butter
- water
- tea

Please note that "fish" can also be considered uncountable when referring to fish in general, but it can be countable when referring to different types or instances of fish (e.g., "three fish"). The classification may vary depending on context.