period+of+time
131time lag — also time lapse noun (C) the period of time between two connected events: There is a considerable time lag between the planning stage and the final product …
132time·scale — /ˈtaımˌskeıl/ noun, pl scales [count] 1 : a period of time whose size can be compared to other periods of time When considered on the 4.6 billion year timescale of the Earth, our lives can seem insignificant. 2 chiefly Brit : ↑time frame What is… …
