A Technique

1. (uncountable) The practical aspects of a given art, occupation etc.; formal requirements. [from 19th c.]
2. (uncountable) Practical ability in some given field or practice, often as opposed to creativity or imaginative skill. [from 19th c.]
3. (countable) A method of achieving something or carrying something out, especially one requiring some skill or knowledge. [from 19th c.]