Peal and Peel are homophones and easily confused words.
The spell-check of most word processing software programs would not catch a slip-up among these three words. As long as it’s a word and it is spelled correctly, spell-check keeps on scanning the document.
Peal is a verb meaning the loud chime of a bell.
Peel is a verb meaning to strip or to shed an exterior layers. Clothes can be be peeled off after being in the pool. Fruit, like a banana, is peeled to remove its skin. Peel can also be a noun, meaning the skin or rind that was removed in peeling.
The following sentence uses both words correctly:
When Pauline heard the alarm clock’s peal, she knew it was time to get up, milk the goats, and peel basket after basket of apples.