Difference between competence and competency

There is difference between the words ‘competence’ and ‘competency’.
‘Competence’ means a skill and the standard of performance reached while ‘competency’ refers to the behavior by which it is achieved. In other words, one describes what people can do while the other focuses on how they do it. Competences refer to the range of skills, which are satisfactorily performed, while competencies refer to the behavior adopted in competent performance.
There are various definitions of competency but most of them refer to competence. Hogg B (1989) defined competency as ‘competencies are the characteristics of a manager that lead to the demonstration of skills and abilities, which result in effective performance within an occupational area. Competency also embodies the capacity to transfer skills and abilities from one area to another’.