The phrase "ability and competency" is correct and usable in written English.
You can use this phrase when you want to highlight someone's capacity or their capability to do something. For example: His ability and competency with financial analysis was very impressive.
So, the difference between ability and competency in the case of the medical student would be whether the student has sufficient knowledge, skills and experience in correctly treating the patient.
Oversight has to have independence, ability, and competency.
Both fertilising ability and competency for embryonic development have varied significantly among the semen of individual bulls [ 41].
This wide difference between experts' assessment and graduates' self-assessment might be explained by the tendency of the graduates to overestimates their abilities and competency.
And while people on the spectrum range vastly in abilities and competencies, with few showing an aptitude for maths, it seems also that a significant proportion of people who are exceptionally good at maths have a higher than average number of autistic traits – a point made by the scholar of autism Simon Baron Cohen in Beautiful Young Minds.
Within the NEPS, a general framework for assessing educationally relevant abilities and competencies has been developed (Weinert et al. 2011).
NCTE (2008) claims that "because technology has increased the intensity and complexity of literate environments, the twenty-first century demands that a literate person possess a wide range of abilities and competencies, many literacies".
JR: The first time I remember becoming fully aware of my abilities and competencies was when I was faced with the possibility of being overlooked for a promotion I knew I was qualified for.
Inclusion Regardless of why a child might be excluded from school – whether because of a family's social status, economic situation, a child's disability or any other reason – the idea of inclusive education is to allow each child to discover the maximum of his or her individual abilities and competencies through learning in the classroom.
