That, the facts you disclose, won't worry a professional nor should it worry him nor will it affect the court. Believe me, courts hear complaints like this every day. They've heard it all. They apply common sense and are not affected by the emotion, which may include "getting back" for supposed past wrongs or the breakdown of the relationship, which may be behind the complaint.
He should not worry about technical terms. There aren't any, unless he thinks access or custody or care and control, are technical, which is unlikely. They are what they sound like. The language used by social workers may be something else sometimes: nobody, including the judge, understands that, and everyone has to have it translated ! He shouldn't worry. Just try not to rant or sound as emotional as the mother, if she goes over the top, as is natural but unhelpful.