Difference between Everyday and Every Day
Everyday, one word, is an adjective meaning "used or seen daily," or "ordinary." "The phone calls were an everyday occurrence."
Every day, two words, is an adverb phrase meaning "daily" or "every weekday." "They go to the coffee shop every day."
How to Use Every Day
When to Use Every Day. Every day, when used as two words, is an adverbial phrase, meaning each day; daily. The first word every is an adjective and the second word day is a noun, and together they function as an adverbial phrase.
Everyday vs. Every Day
Everyday and every day are different. While everyday means daily, every day means each day. The word everyday (as one word) is an adjective that modifies the noun it is used with.
The rule that most people follow is that the version with no space, everyday, is used only as an adjective before a noun, as in these examples: Don’t let the problems of everyday life get you down.