For example:
* In a specific academic discipline: Are you referring to a specific method taught in a particular class or textbook? If so, please specify the subject and the source material (e.g., "Morrisonian technique in Professor X's organic chemistry course").
* In a particular industry or profession: Are these terms jargon used within a specific field (e.g., a particular construction technique)? If so, please specify the industry.
* A misspelling or variation: Is it possible the terms are misspelled or slightly different? Perhaps a similar-sounding method is being used. Providing any additional information about the technique itself would be helpful.
Once you provide more details, I can offer a more accurate and relevant explanation.