What does definitions and operationalization mean?

what are these definitions?

A definition is a statement of what a word means.z
Operationalisation; Define Operationalisation?
Operationalisation is the procedure of defining variables and breaking them down into factors that can be measured. Operationalisation is the process which allows the concepts to be translated into measurable variables. It involves the ways in which how the independent and dependant variables will be measured.

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