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Los pronombres recíprocos
son 'each other' y 'one another'. Son utilizados para expresar una acción mutua entre dos o más personas u objetos
each other = one another = se, nos, uno al otro,mutuamente, unos a otros

If we say that John writes to Mary and that Mary writes to John, we are talking about a reciprocal action. This sort of actions are expressed by each other or one another:
Theywrite to each other / one another once a month.
When the action expressed by the subject falls on other people or things, we employ personal object pronouns: He loves her. However, she may not lovehim; but if we say that he and Mary love each other, they are both in love.
Los pronombres reflexivos
Reflexive pronouns are formed by adding self (singular) or selves (plural) to my, your, our(possesive adjectives) or him, her, it, them (object pronouns).
Myself / Yourself / Himself / Herself / Itself
Ourselves / Yourselves / Themselves
Reflexive pronouns are used to refer back to thesubject:
She made this skirt herself. (That is, nobody helped her.)
I cut myself when I was peeling a clove of garlic.
They can also mean "in person" or "personally", or, in other words, they act asintensifiers:
The mayor himself spoke for the abolition of the death penalty.
We saw the president himself at the reception. (Please note that himself refers to the president, not to the subject.)
Thequeen herself was among the demostrators.

1. That girl never controls herself.
2. My son and my daughter are very fond of each other.
3. I think you and I have learned a lot about each other inthis session.
4. Charles and Karen had an accident and hurt themselves.
5. He looked at himself in the mirror.
6. I painted the house all by myself.
7. Jenny and Terry wrote to each other for a longtime.
8. All the members of the family looked at one another
9. She has accustomed herself to that food.
10. We promised ourselves a good holiday next year.
11. The door seemed to open all by...