The phrase "over concentration" is correct and can be used in written English.
It typically refers to a situation where there is an excessive level of focus or attention on a particular thing or activity. Example: The company's over concentration on cost-cutting measures ultimately led to a decline in product quality and customer satisfaction.
There is an over concentration of BME families in the cities' most deprived neighbourhoods, says Khan.
"The variety of the British press is greatly to be applauded, much as I deplore the over concentration monopoly of ownership which is a really terrible mistake," said Evans, who edited the Sunday Times from 1967 to 1981.
The government is not able to provide even a graduate doctor in all the union level health facilities but there is an over concentration of health personnel in the urban area.
The complaints, entwined with growing concerns over concentration of radio-station ownership by a few media giants, are drawing the scrutiny of regulators and Congress.
However, the age of the patients and the interference over concentration and emotional status were significantly lower in this group.
Acheson said they "tested the idea to destruction" over concentration versus dispersal and visited Maghaberry prison's Roe house, the "prison within a prison" that holds some of Northern Ireland's most high-profile terrorist prisoners.
"There's such an over-concentration on that question," he says, irritably.
"There has been an over-concentration on the consequences of political violence and not enough on domestic violence.
"There is a phenomenon more to do with impulse than reflection, an over-concentration of business, and residents, around London.
The authors said the aerosols contained an over-concentration of compounds that were either aromatic, or the precursors of aromas.
However, local authorities say there is a price to pay in terms of crime and addiction, and have warned of an over-concentration on poor high streets.
