Compounds of にわ

• にわか雨
  (n,adj-no) rain shower
• にわたって
  (exp) throughout
  over a period of ...
  over a span of ...
• 多岐にわたる
  (exp,v5r) to cover a lot of ground
  to include a lot of topics
  (as adjectival phrase) wide-ranging
• 長きにわたる
  (adj-f) long (used with period of time)
  longstanding
  for a long time