1. COGNATES.AFFIXES.PREFIXES.SUFFIXES
Ramírez Vela Bi nisa
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2. COGNATES
A cognate is a word that is related in origin to another word. Cognates have similar meanings and (usually) similar spellings in two different languages. 
Cognates are often derived from Romance languages (French, Spanish, Italian) that have their origins in Latin, although some are derived from other language families. 

3. TRUE COGNATES
True cognates are words that are written in a similar way having the same meaning.
For example:
Chocolate is written the same way in english and either in spanish, meaning the same.

4. FALSE COGNATES
Are those words that are witten or pronounced really similar but having a different meaning each one.
For example:
In English; arm=brazo
In Spanish; arma=gun

5. AFFIXES An affix is added to the root of a word to change its meaning.
An affix added to the front of a word is known as a prefix. One added to the back is known as a suffix.

6. PREFIXES
Are letters wich we add to the beginning of a word to make a new word with a different meaning.
Prefixes can also create a new word with opposite meaning to the original one.

7. COMMON PREFIXES

8. SUFFIXES
A suffix is a group of letters placed at the end of a word to make a new word. A suffix can make a new word in one of two ways:
Inflectional (grammatical): for example, changing singular to plural, or changing present tense to past tense. In this case, the basic meaning of the word does not change.
Derivational: the new word has a new meaning, "derived" from the original word.

9. COMMON SUFFIXES

10. BIBLIOGRAPHY http://grammar.about.com/od/c/g/cognateterm.htm