Meal, Cooked Rice
noun
The ご just makes this word more polite and fancy. When it comes to food, it's nice to be those things. This has the same meaning as the kanji (meal) making it meal, but it also refers to cooked rice as well. So, "Come eat your ご飯" can be both "come eat your rice" and "come eat your meal." Really, since most Japanese meals come with rice, though, you can see how the overlap happens.
ごはん
The reading is the same as the one you learned with the kanji. Now how about you "hand" me another bowl of rice?
お昼はいつも外でご飯を食べます
I always eat out for lunch.
しまった！ご飯こぼしちゃった。
Damn it! I just spilled my rice.
今日の夜ご飯は何を作ろうかな。
I wonder what to make for dinner tonight.