Bale and Bail 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.
Bale is a noun. It means a bundle of cotton or hay on a farm.
Bail is a noun. It means the amount of money required to remove someone from prison as they await trial.
The following sentence uses both words correctly:
Billy couldn’t post bail for his arrest; he was caught stealing a farmer’s truck containing over 50 bales of cotton.