noun, noun which may take the genitive case particle 'no'
same period; same time
Refers to the same time frame or period, often used in historical, economic, or comparative contexts. Can function as a noun or modify another noun with の.
同時期に二つの大きな地震が発生した。
Two major earthquakes occurred during the same period.
同時期のデータと比較してみましょう。
Let's compare it with data from the same period.