Clod and Claude are easily confused words.
The spell-check application of most word processing software programs would not catch a slip-up of these two words. Spell-check is looking for words that aren’t in its dictionary, and words that resemble words in its dictionary but are possibly spelled wrong. Spell-check isn’t perfect. It doesn’t know and can’t guess what word you wanted or what word you meant, it can only judge the words on the page. If you used words that are all spelled correctly, it gives you a pass anyway.
Autocorrect suggests words that start with the same letters. It suggests what word you may want to save time, but quite often, its suggestions couldn’t be more off base. The suggestions are more funny than they are useful.
Clod is a noun, it means a lump or mass. It can also mean a pile of dirt or clay. It can also mean a dull or unintelligent person.
Claude is a man’s name, it means lame. Female versions include Claudia and Claudette.
The following story uses both words correctly:
Claude struggled at his new school; the kids there weren’t welcoming, they called him a clod. But he won them over through persistence and kindness, and before long, he called most of them friends.