technique

1. (uncountable) The practical aspects of a given art, occupation etc.; formal requirements.Examples: "Brahms, after realizing that the technique of the piano was developing along mistaken lines, and his own danger of stereotyping his style, keeps away from it for most of his middle age [...]."; "Not long ago, it was difficult to produce photographs of tiny creatures with every part in focus. That’s because the lenses that are excellent at magnifying tiny subjects produce a narrow depth of field. A photo processing technique called focus stacking has changed that."uncountable

2. (uncountable) Practical ability in some given field or practice, often as opposed to creativity or imaginative skill.Examples: "Yet those who packed concert halls to listen to him sing, as Indians did for over six decades, rarely mentioned his technique."uncountable

3. (countable) A method of achieving something or carrying something out, especially one requiring some skill or knowledge.Examples: "They said executives were warned about one technique nicknamed "carpet karaoke", which involved bending deportees over in aircraft seats to silence them."countable