The word "realisation" is correct and usable in written English.
You can use it to refer to either the process of coming to understand or become aware of something, or the understanding or awareness that results from this process. For example: His realisation that he had made a mistake was a hard pill to swallow.
In reality, grasping that your parents are flawed is unlikely to have any long-term adverse effects (and it is a realisation likely to occur repeatedly throughout one's life).
It would be only one of a series of moments in which all those connected with Falkirk would experience the realisation that the biggest day of the season would belong to the other fellow.
People are coming to the realisation that the system of globalised markets - unregulated, unpoliced and unguided - is fatally flawed.
Today, almost 100 years after "The Swimmers" appeared, the Occupy movement has clenched its fist around the same angry realisation that we are all the 99%, not the 1%.
He said: "The biggest danger to the pub industry is the continuing tax disparity between supermarkets and pubs … There is a growing realisation among politicians, the media and the public that pubs are overtaxed".
Partly, this is smugness at knowing things others did not, all the more so if you have turned them on in the process, but beyond that, it is impossible not to find joy in a journey and its realisation that helps make the vicarious direct.
Only someone who has suffered from chronic, debilitating anxiety will understand quite how exhilarating this realisation felt.
This realisation didn't make the event any less cataclysmic.
To make matters worse it almost didn't get released at all amid the realisation that the site it would be published on was not secure.
It was a deep, heavy sigh – halfway between disbelief and the dawning realisation that this was really going to bugger up her day.
But then I'm reminded of why I spent eight years at university, costing £60,000 and continued into another seven years of training; and this realisation all occurs within the confines of a small consulting room and a four-hour morning surgery.
