More N1 vocabulary

• 中和ちゅうわneutralize; counteract
• 及びおよびand; as well as
• 観覧かんらんviewing
• 単調たんちょうmonotony; monotone; dullness
• 俄かにわかsudden; abrupt; unexpected; improvised; offhand
• コンテストcontest