Meaning : The property of a continuous and connected period of time.
Synonyms : continuity
Meaning : Persistent determination.
Synonyms : doggedness, perseverance, persistency, pertinacity, tenaciousness, tenacity
Meaning : The act of persisting or persevering. Continuing or repeating behavior.
Example :
His perseveration continued to the point where it was no longer appropriate.
Synonyms : perseverance, perseveration