Here is a small taste of the level of vocabulary included in a comprehensive N2 list. Do you know these?
You cannot learn N2 vocabulary in isolation. Take a word from the PDF, like 議論 (argument) . Go to a Japanese news site (NHK Easy News or Asahi Shimbun). Search for that word. Copy the sentence into the PDF margin (if printed) or into a note-taking app. 2500 essential vocabulary for the jlpt n2 pdf