The quality or state of being peculiar; individuality; singularity.
The peculiarity of meeting six people on a usually deserted trail only struck me later on.
That which is peculiar; a special and distinctive characteristic or habit; particularity.
I thought Alice and H. J. P. would have fainted at the full spectacle; but we are fast getting used to the little peculiarities of foreigners and I trust they will forgive us many sins in return.