Good news is the two expressions sound the same, so the only time you can make a mistake is when it comes to writing them down. Let’s see what they mean:
EVERY DAY (adjective + noun)
each day
- You must study every day if you want to improve your English.
- I play badminton every day except Sunday.
- Do you work every day?
EVERYDAY (adjective)
ordinary, common, not special
- I don’t think you should wear everyday clothes to a job interview.
- I thought it was an everyday question. Why are you making such a big deal out of this?
- I’m not talking about celebrities. I’m talking about everyday people like you and me.