N in n
The 'turning point' group
These nouns refer to an event in the history of something, or in someone's life.
breakthrough development high point landmark tipping point turning point watershed
Now under development, the treatment could be a breakthrough in the treatment of cancer.
'The experience,' records Lees-Milne in his autobiography, 'was a turning-point in my life.'
The event was a watershed in the history of Kazakhstan.