9. everyday -- every day

You'll soon master the everyday (ordinary or daily) routine of the job.
He has called every day (each day) this week.

10. everyone -- every one

Every one of us (each person in the group) will go. (Preceding an "of" is two words).
Everyone (everybody) likes to be appreciated. (Not followed by an "of" is one word).

11. indifferent -- in different

She was indifferent (not caring one way or the other) to the offer.
He wanted it expressed in different (in other) ways.