Everyday is an adjective that means commonplace, ordinary, or normal.
~ These shoes are great for everyday wear
~ You shouldn’t wear an everyday outfit to the wedding
~ Don’t use the everyday dishes – it’s a special occasion
Every day means “each day.”
~ I go to the park every day
~ I have to work every day this week except Friday
~ Every day I feel a little better
The Bottom Line
Everyday is a single word and is an adjective, so it’s the one that is used in front of a noun to describe something as normal or commonplace. Every day is an adjective (every) plus a noun (day), and it means each day.