Marhala : مرحلہ
Waqe, Saneha : Event : something that happens at a given place and time.
Silsila, Siaq, Yakay Baad Digar, Tasalsul, Ek Dosray Kay B..., Yk Dosray Kay B... : Sequence : a following of one thing after another in time. "The doctor saw a sequence of patients"
Waqf Lazim : Period : a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations. "In England they call a period a stop"