persistence

nouns

the property of a continuous and connected period of time
continuity, persistence
is derived from
persistent
persistent determination
doggedness, perseverance, persistence, persistency, pertinacity, tenaciousness, tenacity
is derived from
persistent
the act of persisting or persevering; continuing or repeating behavior
"his perseveration continued to the point where it was no longer appropriate"
perseverance, perseveration, persistence
is derived from
persist