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continuance - Definition from Longman English Dictionary Online
continuation - Definition from Longman English Dictionary Online
One of the example sentences is the same as #2.
See also here:
Continuance is interchangeable with continuation in some of its senses. However, only continuance is used to refer to the duration of a state or condition, as in his continuance in office. Continuation applies especially to prolongation or resumption of action (a continuation of the meeting) or to physical extension (the continuation of the street). The continuation of a story is that part of the story following a break in its narration.
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