My two cents here:
In my first nocturne, published here BTW, there are two very similar passages that are played distinctly because of the articulation, expressed by words, slurs and stacatto markings.
In one hand, we have the main theme consisting in simple one octave & broken arpeggios. Everything is marked legato (which tends to be more comfortable than very long slurs). The end of the legato section is sometimes marked by another word or when a change of character appears in the piece.
On the other hand we reach a similar section consisting on arpeggios at M53, but this time the passage must be played ben marcato e agitato and as slurs appear as a consequence of the general character this passage has being more or less contradictory with a legato playing. The contrast between these two sections is evident and can be heard at my post.
Not much, I know, but hope it's been worth the read :B.
Kind regards,
Daniel–Ømicrón.