Seeing the social function, both procedure and explanation texts have the similarity in which both describe how to make or done something. They give the detail description on something, phenomena, goods, product case or problem.
To see the differences between explanation and procedure, we have to analyze the dominant language feature and how the texts are used.
Procedure, this text type is commonly called as instruction text. It uses pattern of commend in building the structure. It use the “to infinitive verb” which is omitted the “to”. It is a kind of instruction text which uses full commend verb. Procedure is commonly used to describe how to make something which is close to our daily activity. For example how to make a cup of tea, how to make a good kite, etc is the best example of the procedure text. It is such word; first boil water, secondly prepare the cup, and so on.
Explanation, it is commonly used the passive voice in building the text. Explanation is such a scientific written material. It describes how certain phenomenon or event happen. How a tornado form, how tsunami works are the best example of explanation text. It uses passive pattern in describing the topic.