Ridea or Rideau: How To spell?

The word Ridea is misspelled against Rideau, a noun meaning "A small mound of earth; ground slightly elevated; a small ridge."

Word end with consecutive vowels 'AU' preceded by alphabets 'ride' is misspelled as 'A' as letter 'U' is phonetically ignored
Wrong Spelling: ride-a
Correct Spelling: ride-au
Find more wrongly spelled words of Rideau to spell it well.